Predict the products of electrolysis in each of the following:i) An aguous solution of sodium chloride(ii) An aquous solution of copper sulphate with copper platinumelectrodes(iii) An aquous solution of copper sulphate with copper electrodes

Predict the products of electrolysis in each of the following:i) An ag

1.	Predict the products of electrolysis in each of the following:i) An aguous solution of sodium chloride(ii) An aquous solution of copper sulphate with copper platinumelectrodes(iii) An aquous solution of copper sulphate with copper electrodes
Answer» 1.Electrolysis of aqueous sodium chloride: Electrolysis of aqueous NaCl results in hydrogen and chloride gas. At the anode (A), chloride (Cl-) isoxidizedto chlorine.2. CuSO4⇋ Cu2++ SO24- H2O ⇋ H++ OH-At cathode, Cu2++ 2e-__> Cu2; Eocell= 0.34 V H++ e-__> H2; Eocell= 0.00 V(i) reaction will take place due to higher reduction potential. At anode, 2SO24-- 2e-__> SO28-; Eocell= 1.96 V 2H2O__> O2+ 4H+4e-; Eocell= 1.23 VThe reaction with lower value of Eowill be preferred at anode, hence O2is released at anode.3. Whencopper electrodesare used in theelectrolysis of copper sulfatesolution, the mass loss ofcopperfrom the positive anodeelectrodeshould equal the mass ofcoppergained and deposited on the negative cathodeelectrode.