Chemistry · May / June 2021 · Paper 11 · Question 33

Which reactions take place during the extraction of aluminium from aluminium oxide using carbon electrodes? 1 2O2– → O2 + 4e– 2 C + O2 → CO2 3 Al 2+ + 2e– → Al

1. A1 only
2. B1 and 2 only
3. C2 and 3 only
4. D1, 2 and 3

As printed in the paper