BRAINCAKEReaction with Aqueous Alkali
When a halogenoalkane is warmed with aqueous sodium hydroxide or potassium hydroxide, a nucleophilic substitution reaction produces an alcohol.
CH3CH2CH2CH2Br + OH− → CH3CH2CH2CH2OH + Br−
1-bromobutane forms butan-1-ol. The hydroxide ion acts as a nucleophile, using a lone pair to attack the δ+ carbon.
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Key terms in this lesson
- precipitate
- An insoluble solid that forms and separates out of a solution during a reaction.
More in Halogenoalkanes
- Classifying Halogenoalkanes
- Reactivity of Halogenoalkanes
- Hydrolysis Reactions
- Comparing the Rates of Hydrolysis
- Nucleophilic Substitution
- Reaction with Alkali
- Reaction with Ammonia
- Reaction with KCN
All 11 lessons in Halogenoalkanes · All Edexcel AS-level Chemistry topics