During the electrolysis of aqueous CuSO4 using inert electrodes(e.g. carbon), the ions preferentially discharged at the electrodes are:
H⁺ at the cathode and OH⁻ at the anode.
Cu²⁺ at the cathode and SO4²⁻ at the anode.
Cu²⁺ at the cathode and OH⁻ at the anode.
H⁺ at the cathode and SO4²⁻ at the anode.
During the electrolysis of aqueous CuSO4 using inert electrodes(e.g. carbon), the electrolyte solution becomes acidic because:
H⁺ ions are discharged.
The pH of the solution is high.
SO4²⁻ are in solution.
Hydrogen and sulphate ions left in solution forms sulphuric acid.
