Write two applications of electrolysis in which the anode diminishes in mass?
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Reaction at anode: Cu→Cu2+ +2e-
Reaction at cathode: Cu2+ +2e-→Cu
In overall process the copper electrode at anode dissolves at anode and is diposited at cathode.
2.
Electrolytic refining of metals:
In electrolytic refining of metals, impure metal is used as anode and pure metal is used as cathode. The impure metal at anode keeps on decreasing in mass while the mass of pure metal at cathode keeps on increasing.
Reaction at cathode: Cu2+ +2e-→Cu
In overall process the copper electrode at anode dissolves at anode and is diposited at cathode.
2.
Electrolytic refining of metals:
In electrolytic refining of metals, impure metal is used as anode and pure metal is used as cathode. The impure metal at anode keeps on decreasing in mass while the mass of pure metal at cathode keeps on increasing.
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(i) Copper sulphate (ii) Lead bromide..
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