Question

The electrolysis of pure alumina is not feasible because

Answer 1

HELLO THERE!

Electrolysis of pure Alumina is not possible. This is because,

=> The melting point of Alumina is very high (2050°C), which is very difficult to achieve, but at this temperature, the Aluminium formed vapourizes, hence it cannot be collected.

=> Al₂O₃, also is insoluble in water, so it's not possible for it to act as an electrolyte.

Hence, Cryolite and Fluorspar are used. Fluorspar acts as a solvent, and both of these increases the conductivity of alumina.

THANKS!