Question

Write equations for the half-reactions that occur in the electrolysis of molten potassium bromide.

Answer 1

K+(l) + e- -> K(l),
2Br- -> Br2(g) + 2 e-

Answer 2

at the anode
2Br- -> Br2(g) + 2 e-
at the cathode
K+(l) + e- -> K(s)