1.

Write equations for the reactions taking place at the two electrodes (mentioning clearly the name of the electrode) during the electrolysis of:1. Acidified copper sulphate solution with copper electrodes. 2. Molten lead bromide with inert electrodes.

Answer»

(i) At Anode : Cu - 2e- → Cu2+

At Cathode : Cu2+  + 2e- → Cu

(ii) At Anode : Br- - e- → Br

                       Br + Br → Br2

At Cathode :  Pb2+ + 2e- → Pb

The cathode and anode both are made of graphite plate.



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