Question

Select the correct answer from the list given in brackets:
The ion which is discharged at the anode during the electrolysis of copper sulphate solutions using copper electrodes as anode and cathode.
$[C{u}^{2+},O{H}^{-},S{O}_4^{2-},H^{+}]$

Answer 1

$S{O}_4^{2-}$ ions and $O{H}^{-}$ ions migrate to the anode but neither are discharged. Because copper being an active electrode it loses electrons more easily and self ionizes to give $C{u}^{2+}$ ions.