# Explain what happens during the electrolysis of molten lead bromide, including what is produced at each electrode and why.

> AQA GCSE Chemistry (8462) — 4.4.3 Electrolysis · Explain · 4 marks

## Mark scheme (4 marks)

1. Lead bromide must be molten (or dissolved) so that the ions are free to move / carry charge
2. Positively charged lead ions move to the negative electrode (cathode) and gain electrons, producing lead metal
3. Negatively charged bromide ions move to the positive electrode (anode) and lose electrons, producing bromine
4. The reaction at the negative electrode (cathode) is reduction / the reaction at the positive electrode (anode) is oxidation

## Key terms

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

## Related

- [Revision notes for AQA GCSE Chemistry (8462)](https://www.gradenine.co.uk/learn)
- [How to answer "Explain" questions](https://www.gradenine.co.uk/tools/command-word-cheatsheet)
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Source: [GradeNine](https://www.gradenine.co.uk/q/explain-what-happens-during-the-electrolysis-33185d3d) · Published by Druglandscape Ltd.