Question

An aqueous solution of Al2O3 is electrolysed. Mam the metal collected at anode

Answer 1

Guess the answer is oxygen.
Because during electrolysis here, Al2O3 will decompose to Al+ and O-2 ions. The O-2 ions are attracted to the positive end I. E, anode. Here the ion gets discharged and form O2.

Answer 2

Explanation:

• In the electrolysis of molten alumina, Na3 AlF6 or CaF2 is added to pure alumina to lower the melting point and to increase the conductivity of the electrolyte.
• Here oxygen gas is liberated at the anode, while aluminium is collected at the anode