During the electrolytic production of aluminium , the carbon anodes are replaced from time to time because

In the electrolytic reduction of alumina, the anodic product is

Give reason a) Cryolite is added during the electrolysis of alumina. b) Carbon rod is replaced from time to time while producing aluminium,

Explain the method of obtaining pure aluminium from alumina by electrolysis. In this process the carbon rods are replaced from time to time. Why?

Why the graphite rods in the extraction of aluminium from molten Al_2 O_3 have to be replaced from time to time ?

Why the graphite rods in the extraction of aluminium from molten Al_2O_3 have to be replaced from time to time ?

Answer the following questions with respect to the electrolytic reduction of aluminium : Name the anode, cathode and electrolyte used in the process named in

Answer the following questions with respect to the electrolytic reduction of aluminium : Explain why the anode has to be periodically replaced.

During electrolytic method of extraction, aluminium liberted at _____ .