A-LevelChemistryElectrochemistry9701/12 · Feb/Mar 2019 · Q331 Mark

In which reactions is the underlined element or compound reduced? 1 NaClO + H₂O₂ → O₂ + NaCl + H₂O 2 2NH₃ + 2Li → 2LiNH₂ + H₂ 3 3CH₃CH₂OH + K₂Cr₂O₇ + 4H₂SO₄ → 3CH₃CHO + Cr₂(SO₄)₃ + K₂SO₄ + 7H₂O

A1, 2 and 3 are correct

B1 and 2 only are correct

C2 and 3 only are correct

D1 only is correct

✓ Correct answer

D: 1 only is correct

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Topic: Electrochemistry, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Feb/Mar 2019 Paper 1 Variant 2, question 33.

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