# 1-bromopropane can react with potassium hydroxide dissolved in ethanol to produce an organic compound. Explain what happens during this reaction, naming the type of reaction, the organic product formed, and the role of the potassium hydroxide.

> Eduqas A-Level Chemistry — 2.6 Halogenoalkanes · Explain · 5 marks

## Mark scheme (5 marks)

1. The reaction is an elimination reaction
2. The organic product is propene (an alkene)
3. A hydrogen atom (and the bromine atom) are removed from 1-bromopropane
4. The potassium hydroxide acts as a base / provides hydroxide ions (OH⁻)
5. A C=C double bond is formed in the product

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