Which one is formed at anode when molten lead bromide is electrolysed using graphite electrode?

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Solution

Electrolysis:
It is a method in which electric current is passed through a substance to induce a chemical reaction.
Reaction at anode:
Molten lead bromide ${PbBr}_{2}$ is an electrolyte so when it is electrolysed using graphite rod, bromine gas is released in form of brown fumes.

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