Solveeit Logo
Login

Question

Chemistry Question on d -and f -Block Elements

When CuSO4CuSO_4 is electrolysed using platinum electrodes?

A

Copper is liberated at cathode, sulphur at anode

B

Copper is liberated at cathode, oxygen at anode

C

Sulphur is liberated at cathode, oxygen at anode

D

Oxygen is liberated at cathode, copper at anode

Answer

Copper is liberated at cathode, oxygen at anode

Explanation

Solution

During electrolysis, copper is deposited at the cathode while oxygen is liberated at anode. The following reactions occur at the electrodes At anode 2H2O→4H++O2+4e−2H_2O \rightarrow4H^+ +O_2+4e^- \hspace41mm (Oxidation) At cathode Cu2++2e−→Cu(s)       (Reduction)Cu^{2+}+2e^- \rightarrow Cu(s) \, \, \, \, \, \, \, (Reduction)