Which cell reaction occurs at the cathode during the electrolysis of molten sodium chloride?
Answer and explanation
Correct answer: C. Na⁺ + e⁻ → Na
- Step 1: Positive ions are reduced at the cathode, so sodium metal forms there. Answer: Na⁺ + e⁻ → Na. Why not the others: 2Cl⁻ → Cl₂ + 2e⁻, 2H⁺ + 2e⁻ → H₂ and Na → Na⁺ + e⁻ don't fit.
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