A-LevelChemistryElectrochemistry9701/12 · May/June 2014 · Q61 Mark

In which reaction is the species in bold acting as an oxidising agent?

A2Ca + O2 → 2CaO

BCr2O7²⁻ + 8H⁺ + 3SO3²⁻ → 2Cr³⁺ + 4H2O + 3SO4²⁻

CMg + Fe²⁺ → Mg²⁺ + Fe

DSO2 + 2H2O + 2Cu²⁺ + 2Cl⁻ → H2SO4 + 2H⁺ + 2CuCl

✓ Correct answer

C: Mg + Fe²⁺ → Mg²⁺ + Fe

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Topic: Electrochemistry, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2014 Paper 1 Variant 2, question 6.

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