Chemistry MC: November 2019

Archive for November 2019

When the pressure of an equilibrium mixture of SO2, O2, and SO3 is doubled at constant temperature, what the effect on Kp?

When the pressure of an equilibrium mixture of SO2, O2, and SO3 is doubled at constant temperature, what the effect on Kp? 2SO2(g) + O2(g) 2SO3(g) a....

when 0.6641 L of M Tl+ is combined with 0.5864 L of M Cl− in the presence of an excess of TlCl(s)?

What is the reaction quotient (Q) for the equilibrium TlCl(s) + H2O(l) Tl+(aq) + Cl−(aq) when 0.6641 L of M Tl+ is combined with 0.5864 L of M Cl−...

Which of the following is always true for a reaction where Kc is at 25°C?

Which of the following is always true for a reaction where Kc is at 25°C? a. The reaction mixture contains mostly products at equilibrium. b. The...

Given the equilibrium constants for the equilibria,

Given the equilibrium constants for the equilibria, NH4+(aq) + H2O(l) NH3(aq) + H3O+(aq); Kc = 2CH3COOH(aq) + 2H2O(l) 2CH3COO−(aq) + 2H3O+(aq); Kc...

For the reaction 2NO(g) + O2(g) 2NO2(g) at 750°C, what is the relationship between Kc and Kp?

For the reaction 2NO(g) + O2(g) 2NO2(g) at 750°C, what is the relationship between Kc and Kp? a. Kc = Kp b. Kc = Kp × (RT)-1 c. Kc = Kp = 1.0 d. Kc...

At equilibrium, it was found that the concentration of H2 was 0.0367 M, the concentration of N2 was 0.0122 M, and the concentration of NH3 was 0.170 M. What was the initial concentration of ammonia?

A sample of ammonia gas was allowed to come to equilibrium at 400 K. 2NH3(g) N2(g) + 3H2(g) At equilibrium, it was found that the concentration of...

For the reaction Br2(g) + Cl2(g) 2BrCl(g), at equilibrium, it is found that the concentrations of Br2, Cl2, and BrCl are 0.277 M, 0.388 M, and M, respectively. What is the value of Kc?

For the reaction Br2(g) + Cl2(g) 2BrCl(g), at equilibrium, it is found that the concentrations of Br2, Cl2, and BrCl are 0.277 M, 0.388 M, and M, respectively....

What is the balanced equation for the following equilibrium expression?

What is the balanced equation for the following equilibrium expression? a. 6SO2(g) + 3O2(g) 6SO3(g) b. 6SO3(g) 6SO2(g) + 3O2(g) c. 6SO3(aq) 6SO2(aq)...

A 25.00-L vessel at 700 K initially contains HI(g) at a pressure of 6.00 atm; at equilibrium, it is found that the partial pressure of H2(g) is 0.581 atm. What is the partial pressure of HI(g) at equilibrium?

A 25.00-L vessel at 700 K initially contains HI(g) at a pressure of 6.00 atm; at equilibrium, it is found that the partial pressure of H2(g) is 0.581...

If the Kp at 2000. K for the reaction given below is 2.1 × 10−3, at what temperature would the value of Kp = 5.0 × 10−10? ΔH0 for this reaction is 180 kJ/mol.

If the Kp at 2000. K for the reaction given below is 2.1 × 10−3, at what temperature would the value of Kp = 5.0 × 10−10? ΔH0 for this reaction is 180...

If the Kp at 2000. K for the reaction given below is 2.1 × 10−3 and the Kp at 27°C is 5.0 × 10−30, calculate ΔH0 for this reaction.

If the Kp at 2000. K for the reaction given below is 2.1 × 10−3 and the Kp at 27°C is 5.0 × 10−30, calculate ΔH0 for this reaction. A(g) + B(g) C(g) a....

The value of Kp at 390.°C for the reversible reaction given below is 7.95 × 10−3. Calculate the value of Kp at 25°C. ΔH0 = 162 kJ/mol, R = 8.314 J/mol•K

The value of Kp at 390.°C for the reversible reaction given below is 7.95 × 10−3. Calculate the value of Kp at 25°C. ΔH0 = 162 kJ/mol, R = 8.314 J/mol•K A(g)...

The van't Hoff equation relates two equilibrium constants at two different temperatures. Consider a reaction where K298 = 16.3 and ΔH0 = −116 kJ/mol. Which of the following statements is true?

The van't Hoff equation relates two equilibrium constants at two different temperatures.Consider a reaction where K298 = 16.3 and ΔH0 = −116 kJ/mol....

Evaluate ΔG0 for a gas phase reaction for which Kp = 3.1 × 10−5 at 718°C.

Evaluate ΔG0 for a gas phase reaction for which Kp = 3.1 × 10−5 at 718°C. a. 62.4 kJ b. 85.6 kJ c. 98.2 kJ d. 110 kJ e. 138 kJ Answer: b. 85.6...

Kp for a gas phase reaction is 4.7 × 10−2 at 660.°C. Evaluate ΔG0 at 660.°C. R = 8.314 J/mol•K

Kp for a gas phase reaction is 4.7 × 10−2 at 660.°C. Evaluate ΔG0 at 660.°C. R = 8.314 J/mol•K a. 23.7 kJ b. 109 kJ c. 2.46 kJ d. 31.5 kJ e. 16.1...

Evaluate ΔG0 at 718°C for a gas phase reaction for which Kp = 7.4 × 10−6 at 718°C. R = 8.314 J/mol•K

Evaluate ΔG0 at 718°C for a gas phase reaction for which Kp = 7.4 × 10−6 at 718°C. R = 8.314 J/mol•K a. 68.6 kJ b. 365 kJ c. 427 kJ d. 97.3 kJ e....

Consider the following reaction at 25°C for which ΔH0 is −26.9 kJ and ΔS0 is 11.4 J/K. Evaluate the equilibrium constant, Kp, for the reaction at 25°C. R = 8.314 J/mol•K

Consider the following reaction at 25°C for which ΔH0 is −26.9 kJ and ΔS0 is 11.4 J/K. Evaluate the equilibrium constant, Kp, for the reaction at 25°C....

Calculate the equilibrium constant at 25°C for the following reaction. R = 8.314 J/mol•K.

Calculate the equilibrium constant at 25°C for the following reaction. R = 8.314 J/mol•K. I2(s) + Cl2(g) 2ICl(g) kJ/mol 0 0 −5.52 a. 86 b. 57 c....

Evaluate the thermodynamic equilibrium constant for the following reaction at 25°C.

Evaluate the thermodynamic equilibrium constant for the following reaction at 25°C. CH4(g) + H2O(g) CO(g) + 3H2(g) kJ/mol −60.63 −228.6 −137.2 0 a....

Calculate the thermodynamic equilibrium constant at 25°C for a reaction for which ΔG0 = −25.60 kJ per mol of reaction. R = 8.314 J/mol•K

Calculate the thermodynamic equilibrium constant at 25°C for a reaction for which ΔG0 = −25.60 kJ per mol of reaction. R = 8.314 J/mol•K a. 5.14 ×...

Calculate the thermodynamic equilibrium constant at 25°C for a reaction for which ΔG0 = 18.3 kJ per mol of reaction. R = 8.314 J/mol•K

Calculate the thermodynamic equilibrium constant at 25°C for a reaction for which ΔG0 = 18.3 kJ per mol of reaction. R = 8.314 J/mol•K a. 0.993 b....

Which of the following pairs are incorrectly matched?

Which of the following pairs are incorrectly matched? a. Negative ΔG0 / K > 1 b. Product-favored / K > 1 c. Reactant-favored / positive ΔG0 d....

Which of the following statements about ΔG0 and the thermodynamic equilibrium constant is false?

Which of the following statements about ΔG0 and the thermodynamic equilibrium constant is false? a. ΔG0 and K are both indicators of the direction...

CO(g) initially at 2.00 atm is in contact with graphite until equilibrium is reached. What is the partial pressure of CO2(g) at equilibrium?

At 1470 K the value of Kp = 6.0 × 10−4 for the reaction below: 2CO(g) C (graphite) + CO2(g) CO(g) initially at 2.00 atm is in contact with graphite...

At equilibrium, the pressure of NH3(g) was found to be 1.75 atm. What is the equilibrium constant, Kc, for the decomposition at this temperature?

A sample of only solid ammonium chloride was heated in a 1.00-L container at 500.°C: NH4Cl(s) NH3(g) + HCl(g) At equilibrium, the pressure of NH3(g)...

At equilibrium, the pressure of NH3(g) was found to be 2.50 atm. What is the equilibrium constant, Kp, for the decomposition at this temperature?

A sample of only solid ammonium chloride was heated in a closed container NH4Cl(s) NH3(g) + HCl(g) At equilibrium, the pressure of NH3(g) was found...

Once equilibrium is established, which of the following would cause this reaction to favor the products more?

Consider the equilibrium decomposition of ammonium bromide. NH4Br(s) NH3(g) + HBr(g) Once equilibrium is established, which of the following would...

Consider the following heterogeneous reaction: Mg(s) + 2H3O+(aq) Mg2+(aq) + H2(g) + 2H2O

Consider the following heterogeneous reaction:Mg(s) + 2H3O+(aq) Mg2+(aq) + H2(g) + 2H2O Which of the following statements is false? a. The amount of...

Which one of the following would force the forward reaction to completion?

Which one of the following would force the forward reaction to completion? CaCO3(s) + 2H3O+(aq) Ca2+(aq) + 3H2O + CO2(g) a. Removing some H3O+ from...

Given the equilibrium reaction: ZnCO3(s) ZnO(s) + CO2(g) Which one of the following statements is true?

Given the equilibrium reaction:ZnCO3(s) ZnO(s) + CO2(g)Which one of the following statements is true? a. Equal concentrations of ZnO(s) and CO2(g)...

The gas phase system below is at equilibrium at 200°C with the following partial pressures: 0.20 atm A, 0.20 atm B, 0.10 atm C, and 0.40 atm D. If an additional 0.30 atm C is introduced into the reaction vessel, what will be the partial pressure of C at 200°C when equilibrium is re-established?

The gas phase system below is at equilibrium at 200°C with the following partial pressures: 0.20 atm A, 0.20 atm B, 0.10 atm C, and 0.40 atm D. If an...

The equilibrium constant, Kp, for the following reaction is 280. at 150.°C. Suppose that a quantity of IBr is placed in a closed reaction vessel and the system is allowed to come to equilibrium at 150.°C. When equilibrium is established, the pressure of IBr is 0.200 atm. What is the total pressure inside the system at equilibrium?

The equilibrium constant, Kp, for the following reaction is 280. at 150.°C. Suppose that a quantity of IBr is placed in a closed reaction vessel and...

A sample of COCl2 is placed in a closed 15.0-liter vessel at 25°C, and it exerts a pressure of 4.65 atm before decomposition begins. What will be the total pressure at equilibrium?

For the reaction below, Kp = 6.70 × 10−3 at 25°C. COCl2(g) CO(g) + Cl2(g) A sample of COCl2 is placed in a closed 15.0-liter vessel at 25°C, and it...

The equilibrium constant, Kp, for the following reaction is 355 at 175°C. If one mole of each A, B and C is placed in a 2.00 L reactor at 175°C, what is the partial pressure of A at equilibrium?

The equilibrium constant, Kp, for the following reaction is 355 at 175°C. If one mole of each A, B and C is placed in a 2.00 L reactor at 175°C, what...

For the reaction below, Kp = 1.59 at 100°C. If 1.0 g of SrCO3 is placed in an empty 5.00 L reactor and allowed to reach equilibrium, what will be the pressure in the reactor?

For the reaction below, Kp = 1.59 at 100°C. If 1.0 g of SrCO3 is placed in an empty 5.00 L reactor and allowed to reach equilibrium, what will be the...

The equilibrium constant, Kp, for the following reaction is 280. at 150.°C. Suppose that a quantity of IBr is placed in a closed reaction vessel and the system is allowed to come to equilibrium at 150.°C. When equilibrium is established, the pressure of IBr is 0.200 atm. What is the pressure of I2 at equilibrium?

The equilibrium constant, Kp, for the following reaction is 280. at 150.°C. Suppose that a quantity of IBr is placed in a closed reaction vessel and...

A sample of COCl2 is placed in a closed 15.0-liter vessel at 25°C, and it exerts a pressure of 4.65 atm before decomposition begins. What will be the partial pressure of Cl2 at equilibrium?

For the reaction below, Kp = 6.70 × 10−3 at 25°C. COCl2(g) CO(g) + Cl2(g) A sample of COCl2 is placed in a closed 15.0-liter vessel at 25°C, and it...

Certain amounts of the hypothetical substances A2 and B are mixed in a 3.00-liter container at 300. K. When equilibrium is established for the reaction the following amounts are present: 0.200 mol of A2, 0.400 mol of B, 0.200 mol of D, and 0.100 mol of E. What is Kp, the equilibrium constant, in terms of partial pressures, for this reaction?

Certain amounts of the hypothetical substances A2 and B are mixed in a 3.00-liter container at 300. K. When equilibrium is established for the reaction...

Certain amounts of the hypothetical substances A2 and B are mixed at 300. K. When equilibrium is established for the reaction below, the following amounts were present in a 3.00-liter container: 0.200 mole of A2, 0.400 mole of B, 0.200 mole of D, and 0.100 mole of E. What is Kp, the equilibrium constant, in terms of partial pressures (atm), for this reaction?

Certain amounts of the hypothetical substances A2 and B are mixed at 300. K. When equilibrium is established for the reaction below, the following amounts...

At 250.°C a sample of PCl5 was placed in a 24-liter evacuated reaction vessel and allowed to come to equilibrium. Analysis showed that at equilibrium 0.42 mole of PCl5, 0.64 mole of PCl3, and 0.64 mole of Cl2 were present in the vessel. Calculate Kp for the reaction at 250.°C.

Given: PCl5(g) PCl3(g) + Cl2(g) At 250.°C a sample of PCl5 was placed in a 24-liter evacuated reaction vessel and allowed to come to equilibrium. Analysis...

For the reaction below, Kp = 203 at 105°C. Calculate Kc at 105°C.

For the reaction below, Kp = 203 at 105°C. Calculate Kc at 105°C. A(g) + 3B(g) AB3(g) a. 6.5 × 10^12 b. 6.3 × 10^3 c. 1.7 × 10^3 d. 1.3 × 10^5 e....

Kc = 0.040 for the system below at 450.°C. Evaluate Kp for the reaction at 450.°C.

Kc = 0.040 for the system below at 450.°C. Evaluate Kp for the reaction at 450.°C. PCl5(g) PCl3(g) + Cl2(g) a. 0.40 b. 0.64 c. 2.4 d. 5.2 × 10^−2 e....

Kc = 2.3 × 10−2 for the reaction below at 100°C. Evaluate Kp at 100°C.

Kc = 2.3 × 10−2 for the reaction below at 100°C. Evaluate Kp at 100°C. CO2(g) + H2(g) CO(g) + H2O(g) a. 43.5 b. 2.3 × 10^−2 c. 1.73 d. 7.0 × 10^−4 e....

Kc = 4.6 × 10−3 for the reaction below at 25°C. Evaluate Kp at 25°C.

Kc = 4.6 × 10−3 for the reaction below at 25°C. Evaluate Kp at 25°C. N2O4(g) 2NO2(g) a. 0.086 b. 0.11 c. 6.2 × 10^−3 d. 1.9 × 10^−4 e. 3.2 × 10^−1 Answer: b....

The partial pressures are found to be: A: 6.70 atm, B: 10.1 atm, C: 3.60 atm. What is the concentration of B at equilibrium?

Consider the reversible reaction at equilibrium at 392°C. 2A(g) + B(g) C(g) The partial pressures are found to be: A: 6.70 atm, B: 10.1 atm, C: 3.60...

The partial pressure of a certain gas in a system at equilibrium at 10.°C is experimentally determined to be 0.340 atmosphere. What is its concentration in moles per liter?

The partial pressure of a certain gas in a system at equilibrium at 10.°C is experimentally determined to be 0.340 atmosphere. What is its concentration...

Phosphorus pentafluoride, PF5(g), partially decomposes to PF3(g) and F2(g) at a temperature of 600 K. A 2.0-liter container is filled with pure PF5. At a temperature of 600 K, the initial pressure of PF5 is 2.0 atm. When equilibrium is reached, half of the original amount of PF5 has decomposed. The equilibrium constant, Kp, is ____.

Phosphorus pentafluoride, PF5(g), partially decomposes to PF3(g) and F2(g) at a temperature of 600 K. A 2.0-liter container is filled with pure PF5....

At 500°C, the following reaction has Kp = 133. If a reaction is initiated with the partial pressure of each gas at 1.0 atm, what is the total pressure of the reaction mixture at equilibrium?

At 500°C, the following reaction has Kp = 133. If a reaction is initiated with the partial pressure of each gas at 1.0 atm, what is the total pressure...

If initially the total pressure in the reactor is 1.80 atm and only A is present, what is the total pressure in the reactor at equilibrium?

For the following gas-phase reaction at 400 K, KP = 17.1. 2A B + C If initially the total pressure in the reactor is 1.80 atm and only A is present,...

For the following reaction at equilibrium at 445°C the partial pressures were found to be: [H2] = 0.45 atm, [I2] = 0.10 atm and [HI] = 1.53 atm. Calculate Kp for this reaction.

For the following reaction at equilibrium at 445°C the partial pressures were found to be: [H2] = 0.45 atm, [I2] = 0.10 atm and [HI] = 1.53 atm. Calculate...

The partial pressures are found to be: A: 6.70 atm, B: 10.1 atm, C: 3.60 atm. Evaluate Kp for this reaction.

Consider the reversible reaction at equilibrium at 392°C. 2A(g) + B(g) C(g) The partial pressures are found to be: A: 6.70 atm, B: 10.1 atm, C: 3.60...

A mixture of 0.40 mol of N2, 0.60 mol of Ar, and 0.30 mol of O2 is confined in a 300-liter vessel at 50.0°C. What is the total pressure of the system?

A mixture of 0.40 mol of N2, 0.60 mol of Ar, and 0.30 mol of O2 is confined in a 300-liter vessel at 50.0°C. What is the total pressure of the system? a....

When equilibrium is established for the following reaction at 298 K, the concentration of N2O4 is 1.34 mol/L, and the concentration of NO2 is 0.448 mol/L. Convert these concentrations to partial pressures. What is the total pressure of the system at equilibrium?

When equilibrium is established for the following reaction at 298 K, the concentration of N2O4 is 1.34 mol/L, and the concentration of NO2 is 0.448...

What would be the equilibrium concentration of N2(g) if 0.12 mole of NO(g) was placed in a 1.00-L container at this temperature? What would be the new equilibrium concentration of N2(g) if the volume were halved at this same temperature?

Given: N2(g) + O2(g) 2NO(g) Kc = 0.16 What would be the equilibrium concentration of N2(g) if 0.12 mole of NO(g) was placed in a 1.00-L container at...

What would be the equilibrium concentration of PCl5(g) if 0.20 mole of PCl5(g) was placed in a 1.00-L container at this temperature? What would be the new equilibrium concentration of PCl5(g) if the volume were halved at this same temperature?

Given: PCl5(g) PCl3(g) + Cl2(g) Kc = 0.040 at 450°C What would be the equilibrium concentration of PCl5(g) if 0.20 mole of PCl5(g) was placed in a...

When the above system is at equilibrium at 200°C, the concentrations are found to be: [A] = 0.20 M, [B] = [C] = 0.30 M. If the volume of the container is suddenly doubled at 200°C, what will be the new equilibrium concentration of A?

Given: A(g) B(g) + C(g) When the above system is at equilibrium at 200°C, the concentrations are found to be: [A] = 0.20 M, [B] = [C] = 0.30 M. If...

When the system is at equilibrium at 200°C, the concentrations are found to be: [A] = 0.20 M, [B] = 0.30 M, [C] = 0.30 M. If the volume of the container is suddenly doubled at 200°C, what will be the new equilibrium concentration of C?

Given: A(g) B(g) + C(g) When the system is at equilibrium at 200°C, the concentrations are found to be: [A] = 0.20 M, [B] = 0.30 M, [C] = 0.30 M. If...

A 1.00-liter vessel contains the following equilibrium concentrations at 400°C: N2, 1.00 M; H2, 0.50 M; and NH3, 0.50 M. How many moles of hydrogen must be removed from the vessel in order to increase the concentration of nitrogen to 1.20 M?

A 1.00-liter vessel contains the following equilibrium concentrations at 400°C: N2, 1.00 M; H2, 0.50 M; and NH3, 0.50 M. How many moles of hydrogen...

A system at equilibrium in a 1.0-liter container was found to contain 0.20 mol of A, 0.20 mol of B, 0.40 mol of C, and 0.40 mol of D. If 0.12 mol of A and 0.12 mol of B are added to this system, what will be the new equilibrium concentration of C?

A system at equilibrium in a 1.0-liter container was found to contain 0.20 mol of A, 0.20 mol of B, 0.40 mol of C, and 0.40 mol of D. If 0.12 mol of...

The following system is at equilibrium with [N2O4] = 0.55 M and [NO2] = 0.25 M. If an additional 0.10 M NO2 is added to the reaction mixture with no change in volume, what will be the new equilibrium concentration of N2O4?

The following system is at equilibrium with [N2O4] = 0.55 M and [NO2] = 0.25 M. If an additional 0.10 M NO2 is added to the reaction mixture with no...

A system at equilibrium in a 1.0-liter container was found to contain 0.20 mol of A, 0.20 mol of B, 0.40 mol of C, and 0.40 mol of D. If 0.15 mol of A and 0.15 mol of B are added to this system, what will be the new equilibrium concentration of A?

A system at equilibrium in a 1.0-liter container was found to contain 0.20 mol of A, 0.20 mol of B, 0.40 mol of C, and 0.40 mol of D. If 0.15 mol of...

The Haber process demonstrates that commercial processes do not maximize each factor that affects equilibria but use them in combination to get maximum production. Which of the following statements about the Haber process is false?

The Haber process demonstrates that commercial processes do not maximize each factor that affects equilibria but use them in combination to get maximum...

Which response contains all the choices below that refer to changes that would shift the equilibrium to the right, and no other choices?

Consider the following reversible reaction at equilibrium. N2(g) + 3H2(g) 2NH3(g) + 9.22 × 104 J Which response contains all the choices below that...

Suppose the following reaction is at equilibrium at a given temperature and pressure. The pressure is then increased at constant temperature, by compressing the reaction mixture, and the mixture is allowed to re-establish equilibrium. At the new equilibrium ____.

Suppose the following reaction is at equilibrium at a given temperature and pressure. The pressure is then increased at constant temperature, by compressing...

Which of the following statements about the Haber process is false?

Which of the following statements about the Haber process is false? a. Fritz Haber, a German scientist, developed the process. b. Higher temperature...

Which of the following will require the least time for a reaction to reach equilibrium?

Which of the following will require the least time for a reaction to reach equilibrium? a. Kc is a very small number. b. Kc is a very large number. c....

In order to increase the yield of SO3, the reaction should be run

For the gas phase reaction below, ΔH0 = −1.6 × 102 kJ for the forward reaction. SO2 + O2 SO3 In order to increase the yield of SO3, the reaction should...

At equilibrium a 1.0-liter container was found to contain 0.20 mol of A, 0.20 mol of B, 0.40 mol of C, and 0.40 mol of D. If 0.10 mol of A and 0.10 mol of B are added to this system, which of the following statements is true?

At equilibrium a 1.0-liter container was found to contain 0.20 mol of A, 0.20 mol of B, 0.40 mol of C, and 0.40 mol of D. If 0.10 mol of A and 0.10...

Consider the following reaction: AB(s) + C2(g) AC(g) + BC(g) + heat Which of the following statements is false?

Consider the following reaction:AB(s) + C2(g) AC(g) + BC(g) + heatWhich of the following statements is false? a. Increasing PC2 will cause a shift...

Which of the numbered responses lists all the following stresses that would shift the equilibrium to the right (favor the forward reaction), and no other stresses?

Which of the numbered responses lists all the following stresses that would shift the equilibrium to the right (favor the forward reaction), and no...

Suppose we let this reaction come to equilibrium. Then we increase the temperature of the reaction mixture. What will be the effect on the net amount of SO3(g) present?

Suppose we let this reaction come to equilibrium. Then we increase the temperature of the reaction mixture. What will be the effect on the net amount...

Decreasing the volume of the container (at constant temperature) after the system below has reached equilibrium would be expected to ____.

Decreasing the volume of the container (at constant temperature) after the system below has reached equilibrium would be expected to ____. HN3 + 2H2O...

Suppose the following reaction is at equilibrium at a given temperature and pressure. The pressure is then increased at constant temperature, by compressing the reaction mixture, and the mixture is allowed to re-establish equilibrium. At the new equilibrium ____.

Suppose the following reaction is at equilibrium at a given temperature and pressure. The pressure is then increased at constant temperature, by compressing...

Suppose we let the reaction below come to equilibrium. Then we decrease the total pressure, by increasing the volume of the container. What will be the effect on the numerical value of the equilibrium constant, K?

Suppose we let the reaction below come to equilibrium. Then we decrease the total pressure, by increasing the volume of the container. What will be...

Which of the following sets of reaction conditions would produce the maximum yield of product?

Consider the reaction A(g) + B(g) D(g) + Heat Which of the following sets of reaction conditions would produce the maximum yield of product? a. 100°C,...

Suppose we let the reaction below come to equilibrium. Then we decrease the total pressure, by increasing the volume of the container. What will be the effect on the net amount of SO3(g) present?

Suppose we let the reaction below come to equilibrium. Then we decrease the total pressure, by increasing the volume of the container. What will be...

For the following reaction, which of the changes listed below would cause more reactants to form when equilibrium is re-established?

For the following reaction, which of the changes listed below would cause more reactants to form when equilibrium is re-established? 2NOCl(g) + 75...

Considering the following reaction at equilibrium, identify which of the stresses below would cause more products to form.

Considering the following reaction at equilibrium, identify which of the stresses below would cause more products to form. CO(g) + Cl2(g) COCl2(g)...

If the system below is at equilibrium in a closed vessel and a small amount of nitrous acid is added, what would be expected to happen?

If the system below is at equilibrium in a closed vessel and a small amount of nitrous acid is added, what would be expected to happen? HN3 + 2H2O...

For the following system at equilibrium, H2(g) + CO2(g) H2O(g) + CO(g) the removal of some of the H2O(g) would cause (according to LeChatelier's principle)

For the following system at equilibrium,H2(g) + CO2(g) H2O(g) + CO(g)the removal of some of the H2O(g) would cause (according to LeChatelier's principle) a....

For the following system at equilibrium, H2(g) + CO2(g) H2O(g) + CO(g) the addition of H2(g) would cause (according to LeChatelier's principle)

For the following system at equilibrium,H2(g) + CO2(g) H2O(g) + CO(g)the addition of H2(g) would cause (according to LeChatelier's principle) a. only...

Which statement best represents LeChatelier's Principle?

Which statement best represents LeChatelier's Principle? a. A system in equilibrium will always remain in equilibrium. b. Only a change in equilibrium...

For the following reaction, Kc is 144 at 200°C. If the reaction were initiated with 0.600 mol of A and 0.200 mol of B in a 2.00-liter container, what would be the equilibrium concentration of A?

For the following reaction, Kc is 144 at 200°C. If the reaction were initiated with 0.600 mol of A and 0.200 mol of B in a 2.00-liter container, what...

A reaction begins with 0.600 mole of A and 0.200 mole of B in a 2.00-L container at a certain temperature. What will be the equilibrium concentration of C?

A reaction begins with 0.600 mole of A and 0.200 mole of B in a 2.00-L container at a certain temperature. What will be the equilibrium concentration...

For the following system, the equilibrium constant at 445°C is 51.0. If a reaction is initiated with the following initial concentrations, [H2] = 2.06 × 10−2 M, [I2] = 1.45 × 10−2 M, and [HI] = 0, what will be the equilibrium concentration of HI?

For the following system, the equilibrium constant at 445°C is 51.0. If a reaction is initiated with the following initial concentrations, [H2] = 2.06...

Kc = 0.040 for the system below at 450°C. If a reaction is initiated with 0.20 mole of Cl2 and 0.20 mole of PCl3 in a 1.0-liter container, what concentration of PCl5 will be present at equilibrium?

Kc = 0.040 for the system below at 450°C. If a reaction is initiated with 0.20 mole of Cl2 and 0.20 mole of PCl3 in a 1.0-liter container, what concentration...

Phosgene, COCl2, is a poisonous gas that decomposes into carbon monoxide and chlorine according to the following equation with Kc = 0.083 at 900°C. If the reaction is initiated with 0.600 mole of COCl2 at 900°C in a 5.00-liter container, what concentration of CO will be present after equilibrium is established?

Phosgene, COCl2, is a poisonous gas that decomposes into carbon monoxide and chlorine according to the following equation with Kc = 0.083 at 900°C....

The equilibrium constant, Kc, is 0.022 at 25°C for the reaction below. What is the concentration of PCl5 at equilibrium if a reaction is initiated with 0.80 mole of PCl5 in a 1.00-liter container?

The equilibrium constant, Kc, is 0.022 at 25°C for the reaction below. What is the concentration of PCl5 at equilibrium if a reaction is initiated with...

Exactly one mol/L of each of the four gases involved in the following reaction is placed in a reactor at 200°C and allowed to reach equilibrium. What is the equilibrium concentration of H2O?

Exactly one mol/L of each of the four gases involved in the following reaction is placed in a reactor at 200°C and allowed to reach equilibrium. What...

At 25°C, Kc for the following reaction is 4.66 × 10−3. If 0.800 mol of N2O4 is injected into a closed 1.00-liter glass container at 25°C, what will be the equilibrium concentration of N2O4?

At 25°C, Kc for the following reaction is 4.66 × 10−3. If 0.800 mol of N2O4 is injected into a closed 1.00-liter glass container at 25°C, what will...

If 25.0 g of ammonium carbamate is placed in an empty chamber and heated to 100°C, what are the equilibrium concentrations of NH3 and CO2? Kc = 58.3 at 100°C.

Ammonium carbamate decomposes into NH3 and CO2 when heated. NH4(NH2CO2)(s) 2NH3(g) + CO2(g) If 25.0 g of ammonium carbamate is placed in an empty chamber...

For the following reaction, Kc is 144 at 200°C. If 0.400 mol of both A and B are placed in a 2.00-liter container at that temperature, what will be the concentration of C at equilibrium?

For the following reaction, Kc is 144 at 200°C. If 0.400 mol of both A and B are placed in a 2.00-liter container at that temperature, what will be...

The equilibrium constant for the following gas phase reaction is 4.0 at a certain temperature. A reaction is carried out at this temperature starting with 2.0 mol/L of CO and 2.0 mol/L of H2O. What will be the equilibrium concentration of H2?

The equilibrium constant for the following gas phase reaction is 4.0 at a certain temperature. A reaction is carried out at this temperature starting...

A quantity of HI was sealed in a tube, heated to 425°C, and held at this temperature until equilibrium was reached. The concentration of HI in the tube at equilibrium was found to be 0.0706 moles/liter. Calculate the equilibrium concentration of H2 (and I2) for the reaction:

A quantity of HI was sealed in a tube, heated to 425°C, and held at this temperature until equilibrium was reached. The concentration of HI in the tube...

If a reaction is initiated with 2.4 M of each substance, what is the equilibrium concentration of C?

If a reaction is initiated with 2.4 M of each substance, what is the equilibrium concentration of C? a. 0.76 M b. 5.3 M c. 4.3 M d. 1.2 M e. 2.4 M Answer: b....

Consider the following system. The equilibrium constant for the reaction at 900°C is 0.082. A reaction is initiated with only COCl2 in a 2.0-liter vessel. At equilibrium 2.36 × 10−3 mol of Cl2 is present. How many moles of COCl2 are present at equilibrium?

Consider the following system. The equilibrium constant for the reaction at 900°C is 0.082. A reaction is initiated with only COCl2 in a 2.0-liter vessel....

If the equilibrium concentration of [O2] is 0.75 M, what is the equilibrium concentration of O3?

For the reaction below the value of the equilibrium constant is 0.0187 at a particular temperature. 3O2 2O3 If the equilibrium concentration of [O2]...

The numerical value of the equilibrium constant, Kc, for the following gas phase reaction is 0.50 at a certain temperature. When a certain reaction mixture reaches equilibrium, the concentration of O2 is found to be 2.0 M, while the concentration of SO3 is found to be 10 M. What is the equilibrium concentration of SO2 in this mixture?

The numerical value of the equilibrium constant, Kc, for the following gas phase reaction is 0.50 at a certain temperature. When a certain reaction...

Nitrosyl chloride, NOCl, dissociates on heating as shown below. When a 1.50-gram sample of pure NOCl is heated at 350°C in a volume of 1.00 liter, the percent dissociation is found to be 57.2%. Calculate the equilibrium concentration of NOCl.

Nitrosyl chloride, NOCl, dissociates on heating as shown below. When a 1.50-gram sample of pure NOCl is heated at 350°C in a volume of 1.00 liter, the...

At a certain temperature Kc = 55 and a reaction vessel contains a mixture with the following concentrations: [SO3] = 0.85 M, [NO] = 1.2 M , [SO2] = 1.5 M and [NO2] = 2.0 M. Which of the following statements concerning the reaction and the reaction quotient, Q, is false?

At a certain temperature Kc = 55 and a reaction vessel contains a mixture with the following concentrations: [SO3] = 0.85 M, [NO] = 1.2 M , [SO2] =...

At a certain temperature Kc = 25 and a reaction vessel contains a mixture with the following concentrations: [H2] = 0.10 M, [Br2] = 0.10 M and [HBr] = 0.50 M. Which of the following statements concerning the reaction and the reaction quotient, Q, is true?

At a certain temperature Kc = 25 and a reaction vessel contains a mixture with the following concentrations: [H2] = 0.10 M, [Br2] = 0.10 M and [HBr]...

The equilibrium constant, Kc, for the following reaction is 0.0154 at a high temperature. A mixture in a container at this temperature has the concentrations: [H2] = 1.11 M, [I2] = 1.30 M and [HI] = 0.181 M. Which of the following statements concerning the reaction and the reaction quotient, Q, is true?

The equilibrium constant, Kc, for the following reaction is 0.0154 at a high temperature. A mixture in a container at this temperature has the concentrations:...

The following reaction is initiated and the concentrations are measured after ten minutes:

The following reaction is initiated and the concentrations are measured after ten minutes: A(g) + 3 B(g) AB3(g) Kc = 1.33 × 10−2 [A] = 1.78 M [B] =...

The equilibrium constant for the following gas phase reaction is 0.50 at 600°C. A mixture of HCHO, H2, and CO is introduced into a flask at 600°C. After a short time, analysis of a small amount of the reaction mixture shows the concentrations to be [HCHO] = 1.5 M, [H2] = 0.5 M, and [CO] = 1.0 M. Which of the following statements about this reaction mixture is true?

The equilibrium constant for the following gas phase reaction is 0.50 at 600°C. A mixture of HCHO, H2, and CO is introduced into a flask at 600°C. After...

Which of the following statements about the reaction quotient, Q, is false?

Which of the following statements about the reaction quotient, Q, is false? a. The value of Q can be used to predict equilibrium concentrations. b....

Calculate the value of the equilibrium constant at the same temperature for

If the equilibrium constant at a certain temperature is 2.1 × 1013 for the following reaction, 4HCl(g) + O2(g) 2Cl2(g) + 2H2O(g) Calculate the value...

Calculate the numerical value of the equilibrium constant for the following reaction at the same temperature.

Given the following reaction and its equilibrium constant at a certain temperature: N2(g) + 3H2(g) 2NH3(g) Kc = 3.6 × 108 Calculate the numerical value...

What is Kc for 3CO2(g) + 3H2(g) 3CO(g) + 3H2O(g) at the same temperature?

The equilibrium constant for the reaction below is 26 at 50°C. CO(g) + H2O(g) CO2(g) + H2(g) What is Kc for3CO2(g) + 3H2(g) 3CO(g) + 3H2O(g)at the...

One (1.0) mole of A and 1.0 mole of B are placed in a 5.0-liter container. After equilibrium has been established, 0.50 mole of D is present in the container. Calculate the equilibrium constant, Kc, for the reaction.

Given: A(g) + 3B(g) C(g) + 2D(g) One (1.0) mole of A and 1.0 mole of B are placed in a 5.0-liter container. After equilibrium has been established,...

Consider the following reaction in which all reactants and products are gases. 1.00 mol of A and 2.00 mol of B are placed in a 5.0-liter container. After equilibrium has been established, 0.50 mol of D is present in the container. Calculate the equilibrium constant, Kc, for the reaction.

Consider the following reaction in which all reactants and products are gases. 1.00 mol of A and 2.00 mol of B are placed in a 5.0-liter container....

A reaction is initiated at 100°C with 2.35 moles NO2 in a 3.0 L reactor (no N2O4 present). If the equilibrium concentration of N2O4 is 0.25 M, what is the value of Kc at 100°C?

Consider the reaction 2NO2(g) N2O4(g) A reaction is initiated at 100°C with 2.35 moles NO2 in a 3.0 L reactor (no N2O4 present). If the equilibrium...

At equilibrium, the following amounts are found at a certain temperature in a 3.0-liter container: 2.0 mole of Cl2, 0.80 mol of H2O (steam), 0.0030 mol of HCl, and 0.0045 mol of O2. Evaluate Kc at that temperature.

At equilibrium, the following amounts are found at a certain temperature in a 3.0-liter container: 2.0 mole of Cl2, 0.80 mol of H2O (steam), 0.0030...

In a 5.0 liter reactor at equilibrium at a constant temperature, it was determined there was 0.45 mol NO, 0.17 mol Br and 1.32 mol NOBr. What is the value of Kc at this temperature?

Nitrogen oxide and bromine combine to form nitrosyl bromide, NOBr. 2NO(g) + Br2(g) 2NOBr(g) In a 5.0 liter reactor at equilibrium at a constant temperature,...

Consider the following reversible reaction. In a 3.00-liter container, the following amounts are found in equilibrium at 400°C: 0.0420 mole N2, 0.516 mole H2, and 0.0357 mole NH3. Evaluate Kc. N2(g) + 3H2(g) 2NH3(g)

Consider the following reversible reaction. In a 3.00-liter container, the following amounts are found in equilibrium at 400°C: 0.0420 mole N2, 0.516...

A reaction is initiated with 0.50 M of both N2 and H2 and no NH3. At equilibrium, the concentration of NH3 was 0.25 M. What is the value of Kc?

Consider the formation of ammonia from nitrogen and hydrogen: N2(g) + 3H2(g) 2NH3(g) A reaction is initiated with 0.50 M of both N2 and H2 and no NH3....

In a 1.0-liter container there are, at equilibrium, 0.10 mole H2, 0.20 mole N2, and 0.40 mole NH3. What is the value of Kc for this reaction at this temperature?

In a 1.0-liter container there are, at equilibrium, 0.10 mole H2, 0.20 mole N2, and 0.40 mole NH3. What is the value of Kc for this reaction at this...

In a 1.0-liter container there are, at equilibrium, 0.20 mole of I2, 0.30 mole of H2, and 0.20 mole of HI. What is the value of Kc for the reaction?

In a 1.0-liter container there are, at equilibrium, 0.20 mole of I2, 0.30 mole of H2, and 0.20 mole of HI. What is the value of Kc for the reaction? H2(g)...

What is the value of Kc for the reaction below if at equilibrium [CH4] = 0.20 M, [H2O] = 0.20 M, [CO] = 0.50 M and [H2] = 1.50 M?

What is the value of Kc for the reaction below if at equilibrium [CH4] = 0.20 M, [H2O] = 0.20 M, [CO] = 0.50 M and [H2] = 1.50 M? CH4(g) + H2O(g) a....

What is the value of Kc for the reaction below if at equilibrium [A] = 0.60 M, [B] = 0.30 M, [C] = 0.10 M and [D] = 0.50 M?

What is the value of Kc for the reaction below if at equilibrium [A] = 0.60 M, [B] = 0.30 M, [C] = 0.10 M and [D] = 0.50 M? 2A(g) + 3B(g) 2C(g) +...

For a reversible reaction with a one-step mechanism, A B , the rate of the forward reaction is ratef = 3.2 × 10−6 s−1 [A] and the rate of the reverse reaction is rater = 4.6 × 10−4 s−1 [B]. What is the value of Kc for this reaction?

For a reversible reaction with a one-step mechanism, A B , the rate of the forward reaction is ratef = 3.2 × 10−6 s−1 [A] and the rate of the reverse...

When the system A + B C + D is at equilibrium,

When the system A + B C + D is at equilibrium, a. the forward reaction has stopped. b. the reverse reaction has stopped. c. both the forward and the...

Which of the following is the best definition of chemical equilibrium?

Which of the following is the best definition of chemical equilibrium? a. A condition where the forward and reverse reaction rates of a reversible...

Which of the statements concerning equilibrium is false?

Which of the statements concerning equilibrium is false? a. A system that is disturbed from an equilibrium condition responds in a manner to restore equilibrium. b....

How would an increase in temperature affect the following equilibrium?

How would an increase in temperature affect the following equilibrium? H2O(l ) <--> H2(g) + 1/2O2(g) ΔH° = 482.0 kJ/mol a. More product would...

The forward rate constant, kf, and reverse rate constant, kr, for a chemical reaction are not equal. Which of the following must be true?

The forward rate constant, kf, and reverse rate constant, kr, for a chemical reaction are not equal. Which of the following must be true? a. The reaction...

Which of the following is true for a chemical reaction at equilibrium?

Which of the following is true for a chemical reaction at equilibrium? a. Only the forward reaction stops. b. Only the reverse reaction stops. c....

For an equilibrium reaction with K = 1.2 × 10^8, the forward rate constant was found to be 3.5 × 10^5. What is the value of the reverse rate constant?

For an equilibrium reaction with K = 1.2 × 10^8, the forward rate constant was found to be 3.5 × 10^5. What is the value of the reverse rate constant? a....

For the following reaction, Kc = 0.500 at 300K. What is the value of Kp?

For the following reaction, Kc = 0.500 at 300K. What is the value of Kp? 2A(g) + B(g) <--> 2C(g) + D(g) a. 8.26 × 10−4 b. 2.03 × 10−2 c....

The equilibrium constant for the formation of calcium carbonate from the ions in solution is 2.2 × 108 according to the reaction:

The equilibrium constant for the formation of calcium carbonate from the ions in solution is2.2 × 108 according to the reaction: Ca^2+(aq) + CO3^2-(aq)...

Given the following reactions and associated equilibrium constants

Given the following reactions and associated equilibrium constants SO2(g) + 1/2O2(g) <--> SO3(g) K1 = 3.1 NO2 <--> NO(g) +1/2O2(g) K2 =...

Calculate K for the following reaction, provided the concentration versus time graph shown below.

Calculate K for the following reaction, provided the concentration versus time graph shown below. 2A <---> 2B + 3C a. 0.50 b. 0.68 c. 1.1 d....

In the Reaction, Initial, Change, Equilibrium (RICE) table started for calculating equilibrium concentrations of the reaction shown, the terms in the "equilibrium" row are ________

In the Reaction, Initial, Change, Equilibrium (RICE) table started for calculating equilibrium concentrations of the reaction shown, the terms in the...

If the reaction quotient Q has a larger value than the related equilibrium constant, K, ________

If the reaction quotient Q has a larger value than the related equilibrium constant, K, ________ a. the reaction is at equilibrium. b. the reaction...

The reaction of bromine gas with chlorine gas, shown here, has a Kp value of 7.20. If a closed vessel was charged with the two reactants, each at an initial partial pressure of 0.500 atm, what would be the equilibrium partial pressure of BrCl(g)?

The reaction of bromine gas with chlorine gas, shown here, has a Kp value of 7.20. If a closed vessel was charged with the two reactants, each at an...

Identify whether or not perturbations A-D will affect the equilibrium concentrations of reactants and products in a gas-phase endothermic chemical reaction that involves one or more gases. If all have an effect on the equilibrium concentrations, select response E. Otherwise, identify the one that does not affect the equilibrium concentrations.

Identify whether or not perturbations A-D will affect the equilibrium concentrations of reactants and products in a gas-phase endothermic chemical reaction...

Which of the following is TRUE regarding fondaparinux?

Which of the following is TRUE regarding fondaparinux? A) It can always be used for the treatment of VTE B) It was the highest peak concentration...

An 82 year old male was seen today in clinic and diagnosed with atrial fibrillation. He weighs 70Kg, has a SCr=2.1mg/dL and no drug allergies. The patient's PCP wants to prescribe Eliquis (apixaban). Which dose is CORRECT?

An 82 year old male was seen today in clinic and diagnosed with atrial fibrillation. He weighs 70Kg, has a SCr=2.1mg/dL and no drug allergies. The patient's...

Which of the following is CORRECT about clopidogrel?

Which of the following is CORRECT about clopidogrel? A) Clopidogrel is metabolized by CYP3A4 B) Clopidogrel is a prodrug C) Clopidogrel is reversibly...

CA has HF and needs a rhythm control medication. Her only two options are:

CA has HF and needs a rhythm control medication. Her only two options are: A) amiodarone B) dronedarone C) sotalol D) dofetilide Answer: amiodarone...

What medication can be used for rate and rhythm control?

What medication can be used for rate and rhythm control? A) dofetilide B) sotalol C) amiodarone D) flecainide Answer: amiodaro...

YS needs an anticoagulant. She has a SAMe score of 3. What would be her best option?

YS needs an anticoagulant. She has a SAMe score of 3. What would be her best option? A) DOAC b) warfarin Answer: DO...

EC needs a rhythm control medication. He has CAD, but no other comorbidities. All are treatment options besides?

EC needs a rhythm control medication. He has CAD, but no other comorbidities. All are treatment options besides? A) flecainide B) dofetilide C) dronedarone D)...

GC has arrhythmia problems and needs therapy for rate control. She has HFrEF. What therapy options are best for her?

GC has arrhythmia problems and needs therapy for rate control. She has HFrEF. What therapy options are best for her? A) BB, non-DHP CCB B) BB, digoxin Answer: BB,...

CG has arrhythmias problems and needs a therapy for his rate control. He has COPD, but no other comorbidities. All are options besides?

CG has arrhythmias problems and needs a therapy for his rate control. He has COPD, but no other comorbidities. All are options besides? A) BB B) diltiazem C)...

ES is a female patient with a CHADS-VASc of 1. What treatment should she get?

ES is a female patient with a CHADS-VASc of 1. What treatment should she get? A) warfarin B) DOAC C) no tx Answer: no ...

Which is not a candidate for ICD?

Which is not a candidate for ICD? A) class II/III with LVEF <35%, post 40 days MI B) class I LVEF <30%, post 40 days MI C) secondary prevention...

If a patient has SVT what should be done first?

If a patient has SVT what should be done first? A) vasovagal maneuvers B) IV BBs or non-DHP CCBs C) synchronized cardioversion Answer: vasovagal...

Which drug has peripheral edema as a side effect?

Which drug has peripheral edema as a side effect? A) lidocaine B) diltiazem C) dofetilide D) verapamil Answer: diltiaz...

Which drug should be restarted if more than 3 doses are missed?

Which drug should be restarted if more than 3 doses are missed? A) amiodarone B) sotalol C) dofetilide D) dronedarone Answer: sotal...

Which 2 drugs should be initiated in the hospital?

Which 2 drugs should be initiated in the hospital? A) amiodarone B) sotalol C) dofetilide D) dronedarone Answer: dofetilide and sotalol ...

Which drug should not be taken with thiazides or bactrim?

Which drug should not be taken with thiazides or bactrim? A) amiodarone B) sotalol C) dofetilide D) dronedarone Answer: dofetili...

Which drug should only be used for paroxysmal AF?

Which drug should only be used for paroxysmal AF? A) amiodarone B) sotalol C) dofetilide D) dronedarone Answer: dronedaro...

Which drugs block Ca+?

Which drugs block Ca+? A) lidocaine, flecainide B) amiodarone, sotalol, dofetilide, dronedarone C) diltiazem, verapamil Answer: diltiazem, ...

Which drugs block K+?

Which drugs block K+? A) lidocaine, flecainide B) amiodarone, sotalol, dofetilide, dronedarone C) diltiazem, verapamil Answer: amiodarone, sotalol,...

Which drugs block Na+?

Which drugs block Na+? A) lidocaine, flecainide B) amiodarone, sotalol, dofetilide, dronedarone C) diltiazem, verapamil Answer: lidocaine, ...

At what QTc should QT-prolong drugs be avoided?

At what QTc should QT-prolong drugs be avoided? A) >450 (M) and >460 (F) B) >440 (M) and >450 (F) C) >430 (M) and >440 (F) D) >420...

Which QTc is associated with greater risk of TdP?

Which QTc is associated with greater risk of TdP? A) 400 B) 500 C) 600 D) 700 Answer: 5...

Which tachycardia has a rapid, narrow QRS, with tachycardia that starts and stops abruptly?

Which tachycardia has a rapid, narrow QRS, with tachycardia that starts and stops abruptly? A) AF B) PSVT C) TdP D) A flutter Answer: PS...

Which tachycardia has a sawtooth pattern?

Which tachycardia has a sawtooth pattern? A) AF B) PSVT C) TdP D) A flutter Answer: A flutt...

Which tachycardia has a long QT?

Which tachycardia has a long QT? A) AF B) PSVT C) TdP D) A flutter Answer: T...

Drugs that increase Ca influx cause

Drugs that increase Ca influx cause A) PVCs B) VT/TdP Answer: PV...

Drugs that cause hypokalemia or block K channels cause

Drugs that cause hypokalemia or block K channels cause A) PVCs B) VT/TdP Answer: VT/T...

SL has a K of 6.6. What would you expect to see?

SL has a K of 6.6. What would you expect to see? A) T waves flat B) prolonged QRS C) P wave wide and flat Answer: P wave wide and fl...

What type of AV block is more P to R and not all atrial depolarizations pass through AV node?

What type of AV block is more P to R and not all atrial depolarizations pass through AV node? A) 1st B) 2nd C) 3rd Answer: 2...

QRS complex is

QRS complex is A) atrial depolarization B) ventricular depolarization C) ventricular repolarization Answer: ventricular depolarizati...

T wave is

T wave is A) atrial depolarization B) ventricular depolarization C) ventricular repolarization Answer: ventricular repolarizati...

P wave is

P wave is A) atrial depolarization B) ventricular depolarization C) ventricular repolarization Answer: atrial depolarizati...

What is not more common in african amercans?

What is not more common in african amercans? A) 5, 6, 8, 11 B) rs12777823 C) p. Val1433Met Answer: p. Val1433M...

p.Val1433Met T allele rs2108622 requires

p.Val1433Met T allele rs2108622 requires A) dose increase B) dose decrease Answer: dose increa...

VKORC1 1639 AA requires

VKORC1 1639 AA requires A) dose increase B) dose decrease Answer: dose decrea...

Which is not an exclusion for outpatient?

Which is not an exclusion for outpatient? A) dialysis B) active bleeding 1 mo ago C) major surgery within past 2w D) decompensation Answer: active...

What treatment is preferred in cancer patients?

What treatment is preferred in cancer patients? A) heparin B) LMWH C) anti-Xa D) warfarin Answer: LM...

Patient RS is being treated with Fondaparinux and his weight is 88 kg. What should be his dose?

Patient RS is being treated with Fondaparinux and his weight is 88 kg. What should be his dose? A) 5 mg SC B) 7.5 mg SC C) 10 mg SC Answer: 7.5...

How would you dose enoxaparin for tx if patient's CrCl is below 30?

How would you dose enoxaparin for tx if patient's CrCl is below 30? A) 1 mg/kg SC Q12h B) 1.5 mg/kg SC Q24h C) 1 mg/kg SC Q24h D) 1.5 mg/kg SC Q12h Answer: 1...

What is the Dabigatran dose for hip prophylaxis?

What is the Dabigatran dose for hip prophylaxis? A) 150 mg BID B) 75 mg BID C) 110 mg day of sx, then 220 mg for 28-35 days Answer: 110 mg...

What is the Rivaroxaban dose for VTE treatment?

What is the Rivaroxaban dose for VTE treatment? A) 20 mg daily B) 15 mg daily C) 15 mg BID for 21 days, then 20 mg D) 10 mg for 35 days Answer: 5...

What is the Rivaroxaban dose for stroke prevention and CrCl 30?

What is the Rivaroxaban dose for stroke prevention and CrCl 30? A) 20 mg daily B) 15 mg daily C) 15 mg BID for 21 days, then 20 mg D) 10 mg for 35...

What is the Edoxaban dose for VTE treatment?

What is the Edoxaban dose for VTE treatment? A) 60 mg daily B) 60 mg daily after 5-10 days of parenteral Answer: 60 mg daily after 5-10 days...

What anti Xa is only for at risk, acutely ill, hospitalized patients?

What anti Xa is only for at risk, acutely ill, hospitalized patients? A) apixaban B) edoxaban C) rivaroxaban D) betrixaban Answer: betrixab...

What is the Apixaban dose for knee surgery prophylaxis?

What is the Apixaban dose for knee surgery prophylaxis? A) 2.5 mg BID x 12 days B) 10 mg BID x 7 days, then 5 mg BID C) 2.5 mg BID x 35 days Answer: 2.5...

What is the Apixaban dose for stroke prevention?

What is the Apixaban dose for stroke prevention? A) 5 mg BID B) 10 mg BID x 7 days, then 5 mg BID C) 2.5 mg BID Answer: 5 mg BID (2.5 if age>80,...

Fondaparinux prophylaxis should not be used for someone if:

Fondaparinux prophylaxis should not be used for someone if: A) CrCl <30, <50kg B) CrCl <50, <30 kg C) CrCl <50, <50 kg D) CrCl <30,...

AB was rushed to the ED with chest pain, SOB, and palpitations. What is the most likely VTE?

AB was rushed to the ED with chest pain, SOB, and palpitations. What is the most likely VTE? A) DVT B) PE Answer: ...

RJ is going in for a low bleed risk surgery. How long should his DOAC be held for before surgery?

RJ is going in for a low bleed risk surgery. How long should his DOAC be held for before surgery? A) 12 hrs B) 24 hrs C) 48 hrs D) 36 hrs Answer: 24...

Warfarin can be changed to DOAC as soon as:

Warfarin can be changed to DOAC as soon as: A) INR <4 B) INR <1 C) INR <3 D) INR <2 Answer: INR <2 (exception: riva <3 and...

What HAS-BLED score is considered high risk?

What HAS-BLED score is considered high risk? A) 1 B) 2 C) 3 D) 4 Answer: ...

For stroke prevention and VTE what INR dose is desired for Warfarin?

For stroke prevention and VTE what INR dose is desired for Warfarin? A) 1-2 B) 2-3 C) 3-4 D) 4-5 Answer: 2...

What is not a side effect of Ivabradine?

What is not a side effect of Ivabradine? A) bradycardia B) headache C) AF D) luminous phenomena Answer: headac...

What is not a contraindication to ARNI?

What is not a contraindication to ARNI? A) class II-III B) angioedema C) combined with ACEI D) aliskiren with diabetes Answer: class II-I...

What is the washout period for ARNI from ACEI/ARB?

What is the washout period for ARNI from ACEI/ARB? A) 12 hr B) 24 hr C) 48 hr D) 36 hr Answer: 36 ...

Which drug regimen is an add on therapy for AA?

Which drug regimen is an add on therapy for AA? A) HYD/ISDN B) ARNI C) MRA D) Ivabradine Answer: HYD/IS...

What is not the right requirement to start Ivabradine?

What is not the right requirement to start Ivabradine? A) class IV B) EF less than equal to 35% C) HR 70+ D) max BB Answer: class ...

Which BB cannot be used in HFrEF?

Which BB cannot be used in HFrEF? A) bisoprolol B) metoprolol succinate C) metoprolol tartrate D) carvedilol Answer: metoprolol tartra...

Every HF patient should ideally be started on:

Every HF patient should ideally be started on: A) ACEI/ARB and BB B) BB and diuretic C) diuretic and ACEI/ARB D) digoxin and ACEI/ARB Answer: ACEI/ARB...

MX is on an ACEI for HF and her K is 5.6 currently. What does that mean?

MX is on an ACEI for HF and her K is 5.6 currently. What does that mean? A) keep the dose the same B) 1/2 the dose C) discontinue Answer: 1/2...

Which 2 drug classes only improve HF symptoms?

Which 2 drug classes only improve HF symptoms? A) CCBs and digoxin B) digoxin and diuretics C) diuretics and ARNI D) ivabradine and diuretics Answer: digoxin...

HFpEF is a LVEF greater than or equal to:

HFpEF is a LVEF greater than or equal to: A) 40 B) 50 C) 30 D) 20 Answer: ...

HFrEF is a LVEF less than or equal to:

HFrEF is a LVEF less than or equal to: A) 40 B) 50 C) 30 D) 20 Answer: ...

Which MRA has a lower affinity for MR but is a more selective aldosterone antagonist?

Which MRA has a lower affinity for MR but is a more selective aldosterone antagonist? A) spironolactone B) eplerenone Answer: eplereno...

Which MRA metabolizes to canrenone and more potent?

Which MRA metabolizes to canrenone and more potent? A) spironolactone B) eplerenone Answer: spironolacto...

Which HF drug decreases sympathetic over activity?

Which HF drug decreases sympathetic over activity? A) ivabradine B) NEPI C) MRA D) digoxin Answer: digox...

Which HF drug reduces HR and selectively blocks If current in the SA node?

Which HF drug reduces HR and selectively blocks If current in the SA node? A) ivabradine B) NEPI C) MRA D) digoxin Answer: ivabradi...

MZ has peripheral edema and JVD. What type of heart failure shows these signs?

MZ has peripheral edema and JVD. What type of heart failure shows these signs? A) LHF B) RHF Answer: R...

RR says he has some abdominal pain, poor appetite, weight loss, and bloating. What type of heart failure is he describing?

RR says he has some abdominal pain, poor appetite, weight loss, and bloating. What type of heart failure is he describing? A) LHF B) RHF Answer:...

KV comes in complaining of exercise intolerance, fatigue, and dyspnea. What type of heart failure is she describing?

KV comes in complaining of exercise intolerance, fatigue, and dyspnea. What type of heart failure is she describing? A) LHF B) RHF Answer: ...

What is not a compensation in HF?

What is not a compensation in HF? A) increased preload (RAAS) B) increased contractility and tachycardia (SNS) C) vasodilation (SNS/ANG II) D) ventricular...

HFpEF is:

HFpEF is: A) systole= contracting/pumping problem B) diastole=relaxing/filling problem C) systole= relaxing/filling problem D) diastole problem= contracting/pumping...

CG was diagnose with NSTEMI at the ED. Her TIMI score was 5. What type of strategy should be done for the patient?

CG was diagnose with NSTEMI at the ED. Her TIMI score was 5. What type of strategy should be done for the patient? A) med managed B) early invasive...

What is the minimum length a patient should be on a P2Y12 inhibitor for after ACS?

What is the minimum length a patient should be on a P2Y12 inhibitor for after ACS? A) 3 mo B) 6 mo C) 9 mo D) 12 mo Answer: 12 ...

Which P2Y12 inhibitor maintenance dose is wrong?

Which P2Y12 inhibitor maintenance dose is wrong? A) clopidogrel 75 mg B) prasugrel 10 mg C) ticagrelor 80 mg BID Answer: ticagrelor 80 mg B...

Which DPI can only be give with PCI?

Which DPI can only be give with PCI? A) prasugrel B) clopidogrel C) ticagrelor Answer: prasugr...

Fibrinolytics are C/I in all below except:

Fibrinolytics are C/I in all below except: A) ICH B) stroke in 6 mo C) active bleed Answer: stroke in 6 ...

A patient post-ACS is discharged home with:

A patient post-ACS is discharged home with: A) aspirin, P2Y12, BB, high intensity statin, NTG B) acetaminophen, P2Y12, CCB, mod intensity statin, NTG C)...

A patient should receive fibrinolysis within ___ min.

A patient should receive fibrinolysis within ___ min. A) 10 B) 30 C) 45 D) 60 Answer: ...

A patient should receive a PCI within ___ min.

A patient should receive a PCI within ___ min. A) 45 B) 60 C) 75 D) 90 Answer: ...

What does MONA stand for?

What does MONA stand for? A) morphine, oxycontin, nifedipine, acetaminophen B) metoprolol, oxycontin, nifedipine, aspirin C) morphine, oxygen, nitroglycerin,...

SR comes into the ER with chest pains. ECG reveals a ST depression and positive biomarkers. What does SR have?

SR comes into the ER with chest pains. ECG reveals a ST depression and positive biomarkers. What does SR have? A) STEMI B) NSTEMI C) USA Answer:...

Which class of drugs inhibition the degradation of cAMP?

Which class of drugs inhibition the degradation of cAMP? A) DTIs B) PDE3 inhibitors C) P2Y12 inhibitors D) GP IIb/IIIa inhibitors Answer: PDE3...

Which DTI is a peptidomimetic, reversible, and univalent?

Which DTI is a peptidomimetic, reversible, and univalent? A) lepirudin B) dabigatran C) lepirudin D) argatroban Answer: argatrob...

Which DTIs are irreversible and bivalent?

Which DTIs are irreversible and bivalent? A) lepirudin and argatroban B) lepirudin and desirudin C) dabigatran and desirudin D) dabigatran and argatroban Answer: lepirudin...

Which fibrinolytic has high fibrin selectivity and has no PAI-I inhibitor?

Which fibrinolytic has high fibrin selectivity and has no PAI-I inhibitor? A) tenecteplase B) reteplase C) alteplase Answer: tenectepla...

Which fibrinolytic must be given as a short continuous infusion?

Which fibrinolytic must be given as a short continuous infusion? A) tenecteplase B) reteplase C) alteplase Answer: altepla...

Which drug class binds to thrombin and converts plasminogen to plasmin to cause clot lysis?

Which drug class binds to thrombin and converts plasminogen to plasmin to cause clot lysis? A) aspirin B) warfarin C) fibrinolytics D) heparin A...

Which P2Y12 inhibitor has an onset of < 2 minutes and is only available as IV?

Which P2Y12 inhibitor has an onset of <2 minutes and is only available as IV? A) clopidogrel B) prasugrel C) ticagrelor D) cangrelor Answer:&...

Which P2Y12 inhibitor has to be taken BID and the max aspirin dose is 100 mg?

Which P2Y12 inhibitor has to be taken BID and the max aspirin dose is 100 mg? A) clopidogrel B) prasugrel C) ticagrelor D) cangrelor Answer:&nbs...

What is the loading dose of ticagrelor?

What is the loading dose of ticagrelor? A) 90 mg B) 120 mg C) 180 mg D) 240 mg Answer: 180 ...

Which P2Y12 inhibitor are reversible?

Which P2Y12 inhibitor are reversible? A) clopidogrel and prasugrel B) ticagrelor and prasugrel C) clopidogrel and cangrelor D) ticagrelor and cangrelor Answer: ticagrelor...

What is the loading dose of prasugrel?

What is the loading dose of prasugrel? A) 40 mg B) 50 mg C) 60 mg D) 70 mg Answer: 60 ...

What is the loading dose of clopidogrel?

What is the loading dose of clopidogrel? A) 200-400 mg B) 100-300 mg C) 500-800 mg D) 300-600 mg Answer: 300-600 ...

What is the onset of aspirin if it is chewed?

What is the onset of aspirin if it is chewed? A) 10 minutes B) 20 minutes C) 15 minutes D) 5 minutes Answer: 20 minut...

Which GP IIb/IIIa inhibitor is a large molecule, with prolonged binding and in which thrombocytopenia is more common?

Which GP IIb/IIIa inhibitor is a large molecule, with prolonged binding and in which thrombocytopenia is more common? A) eptifibatide B) abciximab C)...

Which drug is not a GP IIb/IIIa inhibitor?

Which drug is not a GP IIb/IIIa inhibitor? A) eptifibatide B) abciximab C) tirofiban D) argatroban Answer: argatrob...

Which factor Xa can only be used for VTE prophylaxis and requires with a CrCl 15-30 50% dose decrease?

Which factor Xa can only be used for VTE prophylaxis and requires with a CrCl 15-30 50% dose decrease? A) rivaroxaban B) apixaban C) edoxaban D) ...

Which factor Xa need to be taken with food with doses higher than 15 mg and cannot be administered distal to the stomach?

Which factor Xa need to be taken with food with doses higher than 15 mg and cannot be administered distal to the stomach? A) rivaroxaban B) apixaban C)...

Which warfarin drink interaction is not probable to cause an effect?

Which warfarin drink interaction is not probable to cause an effect? A) ginseng B) green tea C) grapefruit juice Answer: green t...

In warfarin, the ___ isomer is strong

In warfarin, the ___ isomer is strong A) R B) S Answer: ...

What is the only oral DTI and capsules cannot be opened?

What is the only oral DTI and capsules cannot be opened? A) bivalrudin B) argatroban C) dabigatran Answer: dabigatr...

What is the metabolism of bivalrudin?

What is the metabolism of bivalrudin? A) plasma proteases B) acid hydrolases C) gluconeogensis D) lipolysis Answer: plasma proteas...

Which drug is not a DTI?

Which drug is not a DTI? A) bivalrudin B) argatroban C) tirofiban D) dabigatran Answer: tirofib...

Which drug has the longest duration and lowest rate of HITT?

Which drug has the longest duration and lowest rate of HITT? A) heparin B) enoxaparin C) dalteparin D) fondaparinux Answer: fondaparin...

What is the anti-Xa: anti-IIa inhibition ratio for LMWH

What is the anti-Xa: anti-IIa inhibition ratio for LMWH A) 2:1 B) 3:1 C) 4:1 D) 1:1 Answer: 4...

What is the anti-Xa: anti-IIa inhibition ratio for Heparin

What is the anti-Xa: anti-IIa inhibition ratio for Heparin A) 2:1 B) 3:1 C) 4:1 D) 1:1 Answer: 1...

Which part of Virchow's triad has: immobility, LV dysfunction, previous VTE, venous insufficiency

Which part of Virchow's triad has: immobility, LV dysfunction, previous VTE, venous insufficiency A) hypercoaguable state B) circulatory stasis C)...

Your patient is on simvastatin and has a SLCO1B1 of TC or CC. What should you do?

Your patient is on simvastatin and has a SLCO1B1 of TC or CC. What should you do? A) nothing PGx doesn't matter B) myopathy increased: should lower...

GK is a white male and just had an MI. He was prescribed Clopidogrel and his CYP2C19 genotype is 1/3. What should you do?

GK is a white male and just had an MI. He was prescribed Clopidogrel and his CYP2C19 genotype is 1/3. What should you do? A) Keep same therapy B) Decrease...