A reaction is considered to be at equilibrium when the concentration of products equals the concentration of reactants.
Answer: False
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General Chemistry
- A saturated solution of NaBr has a concentration of 45% NaBr in water. What is its solubility in water?
- Which of the following Solubility Product expressions below belongs to the following equilibrium reaction. Fe(OH)3(s) ←→Fe3+(aq) + 3OH-(aq)
- A reaction is considered to be at equilibrium when the rate of the forward reaction is equal to rate of the reverse reaction.
- CaCO3 is considered insoluble in water. CaCO3(s) ↔ Ca2+(aq) + CO32-(aq) Which of the following is true about its equilibrium constant?
- What is the ionic equation for the dissolution of magnesium phosphate, Mg3(PO4)2?
- Consider the following reaction at equilibrium in a closed system: 2NO(g) + Cl2(g) ←→2NOCl(g) + heat What effect will introducing more Cl2(g) to the reaction vessel have on the equilibrium?
- The fact that the process of forming a solution is non-spontaneous means that it absorbs heat.
- For which of the reactions below does Kc (calculated using concentrations) equal KP (calculated using pressures)?
- Calculate the Reaction Quotient (Q) for AgCl when 500 mL of 4 x 10-5M AgNO3(aq) is mixed with 500 mL of 3 x 10-5M NaCl(aq) and determine whether AgCl will precipitate.
- METB is one of the compounds used as octane enhancers in unleaded gasoline. It is manufactured by the catalytic conversion of acetylene to benzene: 3C2H2(g) → C6H6(g). Which value of Kc would make this reaction most useful commercially?
- Write the mathematical expression for the reaction quotient, Qc, for the following reaction:
- Adding sodium cyanide to a saturated solution of AgCl(s) containing suspended AgCl will result in dissolving more AgCl since CN- forms a soluble complex with silver.
- Which of the following actions will decrease the amount of hydrazine gas (N2H4) produced in a closed container in the following reaction? Check all correct answers that apply.
- For which of the reactions would a change in pressure not shift the equilibrium concentration?
- Lewis acid-base adducts (products) can be charged complexes or uncharged solids.
- If a reaction is reversible, when can it be said to have reached equilibrium?
- Assuming that no equilibria other than dissolution is involved, calculate the concentration of iodide ions, [I-(aq)], in the following saturated solution of lead iodide, PbI2(s).
- According to LeChatelier's Principle which of the following will affect the equilibrium of the following reaction in a closed container? Check all correct answers that apply.
- For which of the reactions below does Kc (calculated using concentrations) equal KP (calculated using pressures)?
- For which of the reactions would a change in pressure not shift the equilibrium concentration?
- Which of the following gases would be least soluble in water?
- According to LeChatelier's Principle which of the following will not affect the equilibrium of the following reaction in a closed container? Check all correct answers that apply.
- Which of the following slightly soluble compounds has a solubility greater than that calculated from its solubility product because of hydrolysis of the anion present?