Question

Electrolysis of molten lead bromide is considered a redox reaction

Answer 1

Electrolysis of molten PbBr₂ takes place as follows: 

PbBr₂  ⇋ Pb²⁺ + 2Br^-

Pb²⁺ + 2e  → Pb(at cathode)

2Br^- - 2e^- (Reduction)  → 2[Br](at anode)

2 [Br] → Br₂ ↑

Thus reduction takes place at cathode while oxidation takes place at anode. Therefore, electrolysis of molten PbBr₂ is a redox reaction.