Give the electrolytic reactions of molten $NaCl$ occurring at inert electrodes.

• A
  Cathode: $Na^+ + e^- \longrightarrow Na$; Anode: $2Cl^- \longrightarrow Cl_2 + 2e^-$
• B
  Cathode: $2H_2O + 2e^- \longrightarrow H_2 + 2OH^-$; Anode: $2Cl^- \longrightarrow Cl_2 + 2e^-$
• C
  Cathode: $Na^+ + e^- \longrightarrow Na$; Anode: $2H_2O \longrightarrow O_2 + 4H^+ + 4e^-$
• D
  Cathode: $2H^+ + 2e^- \longrightarrow H_2$; Anode: $2Cl^- \longrightarrow Cl_2 + 2e^-$