Sulfur Dioxide Combines with O₂ in the Presence of a Catalyst

question 23

Multiple Choice

Sulfur dioxide combines with O₂ in the presence of a catalyst as represented by the equation
2SO₂(g) + O₂(g)
2SO₃(g)
Suppose 0.10 mol of SO₂ and 0.10 mol of O₂ are added to a 1-L vessel.At equilibrium,which of the following conditions must be true?

• A)[O₂] = 2[SO₃]
• B)[SO₂] = [O₂]
• C)[SO₂] > [O₂]
• D)[SO₂] < [O₂]
• E)[SO₂] = [O₂] = [SO₃]

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