Give appropriate scientific reasons for the following statements :
Electrolysis of molten lead bromide is considered to be a redox reaction.

Explanation

This is because of the fact that during electrolysis of molten lead bromide, both reduction (at cathode) and oxidation (at anode) takes place. At cathode, `Pb^(2+)` ions gain electrons and get reduced while at anode, `Br^(-)` ions lose electrons and get oxidised.
`underset("Lead Bromide")(PbBr_(2)) hArr Pb^(2+)+2Br^(-)`
Cathode: `Pb^(2+) +2e^(-) to Pb`
Anode : `2Br^(-) -2e^(-) to 2Br`