Essential Chemistry for IGCSE - Chemical Reactions (Section 6 - No. 6)
For the reaction: 2SO₂(g) + O₂(g) ⇌ 2SO₃(g), if more O₂ is added, what happens?
The equilibrium shifts to the left.
The equilibrium shifts to the right.
The equilibrium remains unchanged.
The reaction rate is decreased.
Explanation
Adding more reactant (O₂) will cause the equilibrium to shift to the right, favoring the formation of SO₃.
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