CH-1775
Electrolysis of molten compounds
Chemistry · Secondary 4 · Easy · Electrolysis of molten compounds
During the electrolysis of molten magnesium chloride, which half‑equation correctly represents the reaction at the cathode?
- Mg²⁺ + 2e⁻ → Mg
- Mg → Mg²⁺ + 2e⁻
- 2Cl⁻ → Cl₂ + 2e⁻
- Cl₂ + 2e⁻ → 2Cl⁻
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