Question

The reaction that takes place at the anode during the electrolysis of molten lead bromide is ______.

Options

• \[\ce{2Br - 2e^- -> 2Br^-}\]

• \[\ce{2Br^- - 2e^- -> Br2}\]

Answer 1

The reaction that takes place at the anode during the electrolysis of molten lead bromide is \[\ce{\mathbf{\underline{2Br^- - 2e^- → Br_2}}}\].

Explanation:

\[\ce{2Br^- → Br2 + 2e^-}\]

At the anode, bromide ions are oxidised to bromine (which appears as reddish‑brown vapour).