Question

When copper metal is refined by electrolytic method, incorrect statement is

Answer 1

Correct option is (a) Anode is made of pure metal while cathode is made of impure metal

During copper metal refining by electrolytic method.

following reactions take places--

At Anode- oxidation take place-

Cu(s) → Cu⁺²_(aq) + 2e^-

At anode Cu oxidized to Cu⁺² and come into electrolyte.

At cathode- (Reduction take place)

Cu⁺²_(aq) + 2e^- → Cu(s)

At cathode - Cu is deposited.

There, Anode is made of Impure cupper and cathode is made of pure copper.