Lesson: Chapter 12 — Electrochemistry

12.3. Corrosion and rusting 5 of 5 Reset answers

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Question 5

Which is the anode reaction when iron rusts?

A Fe²⁺ (aq) + 2e → Fe (s) B 2H⁺ (aq) + 2e → H₂ (g) C 2H₂O (l) + O₂ (g) + 4e → 4OH^- (aq) D Fe (s) → Fe²⁺ (aq) + 2e

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Iron being oxidised to Fe²⁺. Oxidation happens at the anode; oxygen and water are reduced at the cathode.

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