A-LevelChemistryNitrogen and sulfur9701/12 · Feb/Mar 2024 · Q241 Mark

Nitrogen monoxide, NO, is a primary pollutant produced by petrol engines and is found in their exhaust gases. Which reaction occurs in a catalytic converter and decreases the emission of nitrogen monoxide?

ANO(g) + CO(g) → NO₂(g) + C(s)

BNO(g) + CO₂(g) → NO₂(g) + CO(g)

C2NO(g) + 2CO(g) → N₂(g) + 2CO₂(g)

D2NO(g) + CO₂(g) → 2NO₂(g) + C(s)

✓ Correct answer

C: 2NO(g) + 2CO(g) → N₂(g) + 2CO₂(g)

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Topic: Nitrogen and sulfur, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Feb/Mar 2024 Paper 1 Variant 2, question 24.

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