Question

The equilibrium constant for the reaction :

$N_2\left(g\right)+O_2\left(g\right)\rightleftharpoons 2NO\left(g\right)$ at 2000K is $4\times {10}^4$.

In presence of catalyst the equilibrium is established ten times faster at the same temperature.

What is the value of equilibrium constant in presence of catalyst ?

• A. $40\times {10}^{-4}$
• B. $4\times {10}^{-4}$
• C. $4\times {10}^4$
• D. None

Answer 1

Answer: (C)

$4\times {10}^4$

The presence of catalyst doesn't affect the equilibrium constant of a reaction. It changes the rate of forward reaction and rate of backward reaction in such way that equilibrium constant doesn't change.

Hence, option C is constant