Same chapter3 marksDifficulty: Medium
Balance the following redox reaction in acidic medium by the ion-electron method: MnO4− + Fe2+ → Mn2+ + Fe3+.
Redox Reactions
3 marksDifficulty: Medium
Define oxidation and reduction in terms of electrons, and identify the oxidising agent in Zn + CuSO4 → ZnSO4 + Cu.
Original Khojo Papers practice question — not from a past board paper.
Answer
Oxidation is the loss of electrons and reduction is the gain of electrons. Zinc loses electrons and is oxidised, so it is the reducing agent; the copper ion gains electrons and is reduced, so copper sulphate is the oxidising agent.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Oxidation and reduction always occur together, which is why such reactions are called redox reactions.
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