36)
2H2O (l ) ® O2 (g) + 4H+(aq) + 4e–
(
)
o
Ecell
 = 1 23 V
(2 37)
The reaction at anode with lower value of E o  is preferred and
therefore, water should get oxidised in preference to Cl– (aq) However,
on account of overpotential of oxygen, reaction (2