For the electrolysis of molten lead bromide a. Name the electrolyte; b

1.	For the electrolysis of molten lead bromide a. Name the electrolyte; b. Name the cathode ; c. Name the anode d. Give the reactions at anode. e. Give the reactions at cathode
Answer» Explanation: (i) At the ANODE OXIDATION reaction takes place. At anode : Cu−2e − →Cu 2+ At cathode redution reaction occurs. At cathode : Cu 2+ +2e − →Cu Here both copper ELECTRODES are USED. (ii) At anode : Br − −e − →Br Br+Br→Br 2 At cathode : Pb 2+ +2e − →Pb Here both anode and cathode are made up of GRAPHITE as it is unaffected by bromine vapours.

For the electrolysis of molten lead bromide a. Name the electrolyte; b. Name the cathode ; c. Name the anode d. Give the reactions at anode. e. Give the reactions at cathode

Answer»

Explanation:

(i) At the ANODE OXIDATION reaction takes place.

At anode : Cu−2e

−

→Cu

At cathode redution reaction occurs.

At cathode : Cu

+2e

−

→Cu

Here both copper ELECTRODES are USED.

(ii) At anode : Br

−

−e

−

→Br

Br+Br→Br

At cathode : Pb

+2e

−

→Pb

Here both anode and cathode are made up of GRAPHITE as it is unaffected by bromine vapours.