In an electrolytic tank, aluminium metal is being extracted by the electrolysis of molten aluminium
Channel: Doubtnut
Date: 2020-01-26

In an electrolytic tank, aluminium metal is being extracted by the electrolysis of molten aluminium oxide using carbon electrodes. It is observed that one of the carbon electrodes is gradually burnt aay and has to be replaced. (a) Which carbon electrode (cathode or anode) is burnt away? (b) why is this carbon electrode burnt away?