150k views
1 vote
If the reaction starts with a mixture of PCl5, PCl3 and Cl2 at pressures of 0.820 atm, 1.322 atm and 0.911 atm respectively, is the reaction at equilibrium

1 Answer

4 votes

Answer:

The reaction is not in equilibrium

Step-by-step explanation:

For the reaction:

PCl₅ ⇄ PCl₃ + Cl₂

Equilibrium constant, Kp, is defined as:


Kp = (P_(PCl_3)P_(Cl_2))/(P_(PCl_5)) = 0.497

When this ratio is = 0.497, the reaction is in equilibrium. Replacing the pressures of the problem, reaction quotient, Q, is:


Q =(1.322atm*0.911atm)/(0.820atm) = 1.469

As Q ≠ Kp, the reaction is not in equilibrium

To reach the equilibrium, the reaction will shift to the left producing more reactant and decreasing amount of products.

User Meiying
by
7.7k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.