Answer to Question #299389 in Chemistry for Pankaj

Question

State Le- Chatelier’s principle and for the following reaction at equilibrium

2SO↓2(g) + O↓2(g) ⇌ 2SO↓3(g) ∆H=-198 kJ

Predict the effect of

i. Adding SO↓2(g) at equilibrium

ii. Decreasing the temperature

iii. Reducing the volume of the container to half

iv. Adding an inert gas under conditions of constant pressure.

Answer 1

Le Châtelier's principle states that if a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium shifts to counteract the change to reestablish an equilibrium.

i. Adding SO↓2(g) at equilibrium shifts it to the right

ii. Decreasing the temperature shifts the equilibrium to the right

iii. Reducing the volume of the container to half shifts the equilibrium to the right

iv. Adding an inert gas under conditions of constant pressure shifts the equilibrium to the left