What ionic half-equations show the electrode reactions that occur during the electrolysis of concentrated aqueous sodium chloride?
- Aanode: $\text{Cl}_2 + 2e^- \rightarrow 2\text{Cl}^-$; cathode: $\text{H}_2 \rightarrow 2\text{H}^+ + 2e^-$
- Banode: $2\text{Cl}^- \rightarrow \text{Cl}_2 + 2e^-$; cathode: $2\text{H}^+ + 2e^- \rightarrow \text{H}_2$
- Canode: $\text{H}_2 \rightarrow 2\text{H}^+ + 2e^-$; cathode: $\text{Cl}_2 + 2e^- \rightarrow 2\text{Cl}^-$
- Danode: $2\text{H}^+ + 2e^- \rightarrow \text{H}_2$; cathode: $2\text{Cl}^- \rightarrow \text{Cl}_2 + 2e^-$