Question

 Predict the products of electrolysis in each of the following : 

(a) An aqueous solution of AgNO₃ with platinum electrodes.

 (b) An aqueous solution of CuCl₂ with Pt electrodes.

Answer 1

(a) At anode (Oxidation)

 4OH^--4e^- => 2H₂ O + O₂ 

At cathode (Reduction) 

Ag^- + e^- => Ag (s)

 (b) At anode (Oxidation) Cl^- - e^- --> Cl (g)

Cl + Cl  => Cl₂

 At cathode (Reduction)

 Cu²⁺ + 2e^- => Cu (s)