A-LevelChemistryElectrochemistry9701/12 · Feb/Mar 2019 · Q101 Mark
Acidified potassium manganate(VII) reacts with iron(II) ethanedioate, FeC₂O₄. The reactions taking place are shown. MnO₄⁻ + 8H⁺ + 5e⁻ → Mn²⁺ + 4H₂O Fe²⁺ → Fe³⁺ + e⁻ C₂O₄²⁻ → 2CO₂ + 2e⁻ How many moles of iron(II) ethanedioate react with one mole of potassium manganate(VII)?
A0.60
B1.67
C2.50
D5.00
✓ Correct answer
B: 1.67
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