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O-LevelChemistryStoichiometry5070/11 · May/June 2025 · Q101 Mark

Magnesium reacts with aqueous copper(II) sulfate to form copper and aqueous magnesium sulfate. What is the correct equation for this reaction?

AMg + CuSO4 → Cu + MgSO4
BMg + Cu2SO4 → 2Cu + MgSO4
C2Mg + CuSO4 → Cu + Mg2SO4
D2Mg + Cu2SO4 → 2Cu + Mg2SO4

✓ Correct answer

A: Mg + CuSO4 → Cu + MgSO4

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About this question

Topic
Stoichiometry, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, May/June 2025 Paper 1 Variant 1, question 10.

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