O-LevelChemistryElectrolysis5070/11 · May/June 2013 · Q281 Mark
In the electrolysis of molten aluminium oxide for the extraction of aluminium, the following three reactions take place. 1 Al3+ + 3e⁻ → Al 2 2O2⁻ → O2 + 4e⁻ 3 C + O2 → CO2 Which reactions take place at the positive electrode?
A1 only
B2 only
C1 and 3 only
D2 and 3 only
✓ Correct answer
D: 2 and 3 only
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