Question

By the electrolysis of aqueous solution of $CuSO_{4}$, the products obtained at both the electrodes are

• A. $O_2$ at anode and $H_2$ at cathode
• B. $H _{2}$ at anode and $Cu$ at cathode
• C. $O _{2}$ at anode and $Cu$ at cathode
• D. $H _{2} S _{2} O _{8}$ at anode and $O _{2}$ at cathode

Answer 1

Answer: (C)

$O _{2}$ at anode and $Cu$ at cathode

Answer 2

Oxygen is oxidised at anode while $Cu^{2+}$ is reduced at cathode. Therefore copper deposits on cathode and oxygen is evolved at anode.