During the electrolysis of copper sulphate aqueous solution using copper electrode, the reaction taking place at the cathode is

Options

A. `Cu to Cu ^(2+(aq) + 2e^(-)`
B. `Cu^(2+)(aq) + 2e^(-) to Cu(s)`
C. `H^(+)(aq) + e^(-) to1/2 H_(2)(g)`
D. `SO_(4)^(2-)(aq) to SO_(3)(g) +1/2 O_(2)(g) + 2e^(-)`

Answer

B

Explanation

`Cu^(2+) (aq)+ 2e^(-) to Cu(s)`