Question

Which of the following chemical reactions represents Hall- Heroult Process?

Options

• \[\ce{Cr2O3 + 2Al -> Al2O3 + 2Cr}\]

• \[\ce{2Al2O3 + 3C -> 4Al + 3CO2}\]

• \[\ce{FeO + CO -> Fe + CO2}\]

• \[\ce{2[Au(CN)2]^-_{(aq)} + Zn(s) -> 2Au(s) + [Zn(CN4)^{2-}]}\]

Answer 1

\[\ce{2Al2O3 + 3C -> 4Al + 3CO2}\]

Explanation:

Hall Heroult process is the major industrial process for the extraction of aluminium.