During the electrolysis of molten lead (II) bromide, the reaction(s) occurring is(are):
2Br⁻(aq) → Br2(g) + 2e.
All are correct.
PbBr2(l) → Pb(l) + Br2(g).
Pb²⁺(aq) + 2e⁻ → Pb(l).
During the electrolysis of aqueous CuSO4 using inert electrodes (e.g. carbon), the blue colour of the solution:
Fades with time.
Remains the same.
None is correct.
Intensifies with time.