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?

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 exerts a pressure of 4.65 atm before decomposition begins. What will be the partial pressure of Cl2 at equilibrium?



a. 0.173 atm
b. 0.206 atm
c. 0.566 atm
d. 2.14 atm
e. 1.16 atm


Answer: a. 0.173 atm


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