Answer:
(b) In the
metallurgy of aluminium, electrolysis is performed in a steel vessel with
lining of carbon acts as cathode and graphite acts as anode. During this
process graphite anode is oxidised to CO and .
Chemical reaction
occurring in this process is as follows
This process
is known as Hall - Heroult process. The electrolytic reactions are
At cathode
At anode
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