Question

Name the chemical compound which is electrolysed in molten state to obtain aluminium metal. Which gas is evolved during this process?

Answer 1

Aluminium oxide is electrolysed in the molten state to obtain aluminium metal. Oxygen gas is evolved during the process.

\[\ce{\underset{Aluminium oxide}{2Al2O3_{(l)}} ->[Electrolysis] \underset{Aluminium}{4Al_{(l)}} + \underset{Oxygen}{3O2_{(g)}}}\]