Question

Consider this reaction: 2SO2 (g) + O2 (g) 2SO3 (g) + heat

Answer 1

B. The equilibrium will shift to the left.

Answer 2

Answer:

A. The equilibrium will shift to the right.

Explanation:

For Le Chatêlier's principle, when there is a disturb in an equilibrium reaction, the equilibrium shift to reduce the effects of the disturb, and then a new equilibrium is formed.

So, for the reaction given:

2SO₂(g) + O₂(g) ⇄ 2SO₃(g) + heat

If more sulfur dioxide, SO₂, is added, to reduce the disturb, the SO₂ must be consumed, so the equilibrium will shift for the right.

The Keq remains constant. The equilibrium constant only changes if there is a change in temperature.