# Molten lead(II) bromide is electrolysed using inert electrodes. Describe what happens at each electrode, naming the products formed.

> Pearson Edexcel International GCSE Chemistry (4CH1) — 1.9 Electrolysis · Describe · 4 marks

> Lead(II) bromide is an ionic compound. When melted, it undergoes electrolysis and decomposes into its elements.

## Mark scheme (4 marks)

1. Bromide ions (anions) move towards the anode (positive electrode)
2. Bromine is produced at the anode as bromide ions lose electrons (oxidation)
3. Lead ions (cations) move towards the cathode (negative electrode)
4. Lead is produced at the cathode as lead ions gain electrons (reduction)

## Key terms

- [inert electrode](https://www.gradenine.co.uk/glossary/inert-electrode)

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Source: [GradeNine](https://www.gradenine.co.uk/q/molten-lead-ii-bromide-is-electrolysed-using-f569c50b) · Published by Druglandscape Ltd.