Question

Give reason for the following : Electrolysis of molten lead bromide is considered a redox reaction.

  • Electrolysis
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Answer

Electrolysis of molten lead bromide involves oxidation and reduction reaction and hence is a redox reaction. The reactions are as follows :

Reaction at the cathode:
Pb2+ + 2e– ⟶ Pb [Reduction reaction]

Reaction at anode:
Br1- – 1e– ⟶ Br
Br + Br ⟶ Br2 [Oxidation reaction]

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