However,
on account of overpotential of oxygen, reaction (2 36) is preferred Thus,
the net reactions may be summarised as:
NaCl (aq) 
H O
2

→
  Na+ (aq) + Cl– (aq)
Cathode:
H2O(l ) + e– ® ½ H2(g) + OH– (aq)
Anode:
Cl– (aq) ® ½ Cl2(g) + e–
Net reaction:
NaCl(aq) + H2O(l) ® Na+(aq) + OH–(aq) + ½H2(g) + ½Cl2(g)
The standard electrode potentials are replaced by electrode potentials
given by Nernst equation (Eq 2