Q. For the equilibrium, $PCl_{5} \rightleftharpoons PCl_{3} + Cl_{2},\ \ \ K_{c} = \frac{\alpha^{2}}{(1 - \alpha)V}$ temperature remaining constant
A) $K_{c}$ may increase or decrease with the change in volume depending upon its numerical value
B) $K_{c}$ will increase with the increase in volume
C) $K_{c}$ will increase with the decrease in volume
D) $K_{c}$ will not change with the change in volume
Explanation
(c)
From the value of equilibrium constant,
$K_{c} = \frac{\alpha^{2}}{(1 - \alpha)V}$
it is clear that $K_{c}$ will increase if the volume is decreased.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.