Identify the Catalyst in the Following Three-Step Reaction

question 11

Multiple Choice

Identify the catalyst in the following three-step reaction. NO(g) + O₂(g) → NO₃(g) NO₃(g) + NO(g) → 2NO₂(g) NO₂(g) + SO₂(g) → NO(g) + SO₃(g)

• A)SO₂(g)
• B)NO₃(g)
• C)O₂(g)
• D)NO(g)
• E)NO₂(g)

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