2NaCl (aq) => 2Na+ (aq) + 2Cl-(aq)
양극 : 2Cl- (aq) - 2e- ( 또는 + e+) => Cl2 ( g)
Cl2(g) + H2O => HClO(aq) + HCl.
음극 : 2Na+ (aq) + e- = 2Na(s)
2Na(s) +2 H2O => 2NaOH(aq) + H2(g)
NaOH + HCl => NaCl + H2O
NaCl + H2O =>NaOH + HClO + H2