# State the name of each of the following organic compounds and identify the homologous series each belongs to: a compound with the molecular formula C₄H₁₀; a compound with the molecular formula C₃H₆; a compound with the molecular formula C₂H₅OH; a compound with the molecular formula CH₃COOH.

> Cambridge International IGCSE Chemistry (0620) — 11.2 Naming organic compounds · State · 4 marks

## Mark scheme (4 marks)

1. C₄H₁₀ is butane, belonging to the alkanes
2. C₃H₆ is propene, belonging to the alkenes
3. C₂H₅OH is ethanol, belonging to the alcohols
4. CH₃COOH is ethanoic acid, belonging to the carboxylic acids

## Key terms

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

## Related

- [Revision notes for Cambridge International IGCSE Chemistry (0620)](https://www.gradenine.co.uk/learn)
- [How to answer "State" questions](https://www.gradenine.co.uk/tools/command-word-cheatsheet)
- [Practice this with AI marking (free)](https://www.gradenine.co.uk/start)

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Source: [GradeNine](https://www.gradenine.co.uk/q/state-the-name-of-each-of-6bac3c75) · Published by Druglandscape Ltd.