Question

What happens if molten Lead Bromide (PbBr2) is electrolyzed?

(a) At anode, brown fumes of bromide gas are given off

(b) At anode, molten lead can be seen

(c) At cathode, brown fumes can be seen

(d) At cathode, lead bromide can be seen

The question was posed to me during an interview.

My question is from Applications of Electroplating in division Electroplating of Engineering Chemistry II

Answer 1

Right answer is (a) At anode, brown fumes of bromide gas are given off

For explanation I would say: When molten lead bromide is electrolyzed, we get impurities on the cathode region and pure metal on the anode side. Also during deposition (due to high initial ignition), molten lead gets formed on the anode side.