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

What will happen if more sulfur dioxide gas is added to the reaction mixture?

AThe equilibrium will shift to the right. B. The equilibrium will shift to the left.
CKeq will increase. D. Keq will decrease. E. There will be no shift in equilibrium.

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IthaloAbreu

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.

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