A-LevelChemistryElectrochemistry9701/12 · Oct/Nov 2022 · Q51 Mark

Two moles of VO2+ ions react with one mole of zinc atoms in the presence of dilute acid. The products include Zn2+ ions and an ion, Y. Ion Y contains vanadium. Only zinc and vanadium change oxidation state in the reaction. What is ion Y?

AVO3

BVO+

CVO2+

DVO22+

✓ Correct answer

C: VO2+

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Topic: Electrochemistry, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Oct/Nov 2022 Paper 1 Variant 2, question 5.

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