O-LevelChemistryStoichiometry5070/12 · May/June 2018 · Q301 Mark

Copper(II) oxide reacts with carbon when heated. 2CuO + C → 2Cu + CO₂ Which statement about this reaction is correct?

ACarbon is the oxidising agent.

BCarbon is the reducing agent.

CCopper(II) oxide is oxidised.

DCopper(II) oxide is the reducing agent.

✓ Correct answer

B: Carbon is the reducing agent.

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Topic: Stoichiometry, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2018 Paper 1 Variant 2, question 30.

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