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A-LevelChemistryNitrogen and sulfur9701/12 · May/June 2023 · Q241 Mark

The equation shows a reaction that occurs between carbon monoxide and nitrogen monoxide in a catalytic converter. 2CO(g) + 2NO(g) → 2CO₂(g) + N₂(g) Which statement is correct?

AThe catalyst used is finely divided iron.
BThe reaction prevents greenhouse gas emissions into the atmosphere.
CThe reaction reduces the possibility of the formation of photochemical smog.
DThe reaction results in increased ozone depletion.

✓ Correct answer

C: The reaction reduces the possibility of the formation of photochemical smog.

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About this question

Topic
Nitrogen and sulfur, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source
A-Level Chemistry, May/June 2023 Paper 1 Variant 2, question 24.

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