Read the Assertion and Reason below and choose the correct option. — Chemical Equilibrium Chemistry Question

💡 Solution & Explanation

The equilibrium constant $K$ is the ratio of the forward rate constant to the backward rate constant ($K = k_f / k_b$). A catalyst provides an alternative pathway with a lower activation energy, which increases both $k_f$ and $k_b$ by the exact same factor. Since the factor cancels out in the ratio, the equilibrium constant remains unchanged. Thus, Statement II is the correct explanation for Statement I. Therefore, correct answer is A.