Q17Multiple choice
In the electrolysis of aqueous sodium chloride solution which of the half cell reaction will occur at anode?
- (i)Na+ (aq) + e– → Na (s); E Cell = –2.71V + V
- (ii)2H2O (l) → O2 (g) + 4H (aq) + 4e– ; E Cell = 1.23V + 1 V
- (iii)H (aq) + e– → H (g); E Cell = 0.00 V 2 2 – 1 V
- (iv)Cl (aq) → Cl (g) + e– ; E Cell = 1.36 V 2 2
Show answer
(ii) 2H2O (l) → O2 (g) + 4H (aq) + 4e– ; E Cell = 1.23V + 1 V