For the reaction, 2SO_2(g) + O_2(g) ⇌ 2SO_3(g), ΔH = −57.2 kJ mol^ -1 and K_C = 1.7 10^ 16 . Which of the following statement is incorrect?

JEE Main 2019 Chemistry question

For the reaction, 2SO(g) + O(g) ⇌ 2SO(g), ΔH = −57.2 kJ mol and K = . Which of the following statement is incorrect?

(A)The equilibrium will shift in forward direction as the pressure increases.
(B)The addition of inert gas at constant volume will not affect the equilibrium constant.
(C)The equilibrium constant is large suggestive of reaction going to completion and so no catalyst is required.Correct
(D)The equilibrium constant decreases as the temperature increases.

Answer: (C)

K says nothing about rate; the reaction is slow and needs VO catalyst.

Question ID VK-009526