For the reaction,`2SO_(2)(g) + O_(2)(g) rarr 2SO_(3)(g)`
`DeltaH = -57.2 KJmol^(-1) "and" K_(c) = 1.7 xx 10^(16)`
.Which of the following statement is INCORRECT?

Options

A. The equilibrium constant decreases as the temperature 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.
D. The equilibrium will shift in forward direction as the pressure increases.

Answer

C

Explanation

Given
`DeltaH = -57.2 kJ//mol`
`K_(c) = 1.7 xx 10^(16)`
(1) From `K darr = Ae^(-(DeltaH)/(RTuarr))` as T increases, K decreases

(2) Equilibrium constant is not a affected by change in volume.

(3) Although `K_(c)` is large but it doesn’t mean reaction go for completion.

(4) Equilibrium will shift in forward direction as pressure increases.

Hence (3) is incorrect.