A concentrated aqueous solution of sodium chloride is electrolysed with inert electrodes. Which row shows the changes in this electrolysis and the reason for them?
- Aoxygen is discharged at the anode | $\text{OH}^- (aq)$ loses electrons more easily than $\text{Cl}^- (aq)$
- Bduring electrolysis the pH of the electrolyte increases | the electrolysis in aqueous solution involves the reduction of $\text{H}^+ (aq)$ ions
- Csolid sodium is produced at the cathode | $\text{Na}^+ (aq)$ is present in aqueous solution
- Dthe products stay the same if the aqueous sodium chloride is replaced by molten sodium chloride | $\text{Na}^+$ and $\text{Cl}^-$ are present in both molten and aqueous sodium chloride