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One mole of KMnO4 is used to completely oxidise FeSO4, FeC2O4, and H2C2O4 separately in acidic medium. Identify the correct statement(s).
- 5 moles of FeSO4 can be oxidised
- 3/5 moles of FeC2O4 can be oxidised
- 5/3 moles of FeC2O4 can be oxidised
- 2.5 moles of H2C2O4 can be oxidised
Correct answer: 5 moles of FeSO4 can be oxidised
Solution
1 mol KMnO4 provides 5 equivalents. FeSO4: 1e- per mol => 5 mol oxidised (correct). FeC2O4: 3e- per mol => 5/3 mol oxidised (option C correct, option B incorrect). H2C2O4: 2e- per mol => 5/2 = 2.5 mol oxidised (option D correct). Correct statements: A, C, D.
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