Question

Why is so much graphite required for electrolytic process?

Answer 1

During the electrolysis process, aluminium is deposited at the cathode and oxygen is liberated at the anode. Some of this oxygen reacts with the carbon in the graphite to form carbon-dioxide, thus slowly burning away the anodes. Thus, the anodes have to replaced periodically.

Answer 2

Electrolysis is a process where electricity is passed through a solution and this results in the molecules of the solvent and the solute getting separated into ions. ... As graphiteconducts electricity and is resistant to corrosion it is used to make electrodes for electrolysis.