During the electrolysis of aqueous cupric chloride using inert electrodes, pH

aq. ${\mathrm{CuCl}}_2\left({\mathrm{p}}^{\mathrm{H}}<7\right)$
Cathode : ${\mathrm{Cu}}^{2+}+2{\mathrm{e}}^{-}\to \mathrm{Cu}$
Anode : $2{\mathrm{Cl}}^{-}\to {\mathrm{Cl}}_2+2{\mathrm{e}}^{-}$
As the electrolysis progresses concentration CuCl₂ decreases. 
The solution becomes richer in water, p^H increases.