BRAINCAKEComparing the Rates of Hydrolysis
The rates of hydrolysis of different halogenoalkanes can be compared using silver nitrate: the faster the halide ion is released, the sooner the silver halide precipitate appears.
Method:
1. Put equal amounts (e.g. 3 drops) of 1-chlorobutane, 1-bromobutane and 1-iodobutane in separate test tubes, each with 1 cm3 of ethanol.
2. Warm these, and a tube of aqueous silver nitrate, in a water bath at about 50°C.
3. Add equal volumes of the silver nitrate solution to each tube at the same time and start a timer.
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Key terms in this lesson
- mean bond enthalpy
- The average energy needed to break one mole of a particular covalent bond, measured over a range of compounds, with all species gaseous.
- hydrolysis
- The breaking of a chemical bond by reaction with water.
More in Halogenoalkanes
- Naming Halogenoalkanes
- Classifying Halogenoalkanes
- Reactivity of Halogenoalkanes
- Hydrolysis Reactions
- Nucleophilic Substitution
- Reaction with Alkali
- Reaction with Aqueous Alkali
- Reaction with Ammonia
All 11 lessons in Halogenoalkanes · All Edexcel AS-level Chemistry topics