A-LevelChemistryElectrochemistry9701/12 · May/June 2023 · Q121 Mark

The vanadium salt, VOSO₄, is soluble in water and reacts readily with powdered manganese in dilute sulfuric acid. The equation for the reaction is shown. Mn(s) + 2VOSO₄(aq) + 2H₂SO₄(aq) → V₂(SO₄)₃(aq) + MnSO₄(aq) + 2H₂O(l) Which statement about this reaction is correct?

AHydrogen is oxidised in the reaction.

BManganese is the reducing agent in this reaction.

CSulfuric acid is the oxidising agent in this reaction.

DThe oxidation state of the vanadium changes from +5 to +3.

✓ Correct answer

B: Manganese is the reducing agent in this reaction.

Oracle Prep sorts past-paper questions by topic, so you can drill Electrochemistry and see which topics are most likely to come up next.

Topic: Electrochemistry, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2023 Paper 1 Variant 2, question 12.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content