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Qualitative Tests for Haloalkanes

OCR A-level Organic ChemistryChromatography and Qualitative AnalysisLesson 7 of 10

Haloalkanes are identified by hydrolysis with aqueous silver nitrate in ethanol. The ethanol is a solvent in which both the haloalkane and the aqueous silver nitrate mix.

Method: add the haloalkane to silver nitrate solution in ethanol and warm in a water bath at about 50 °C.

Water acts as a nucleophile and hydrolyses the C−X bond, releasing halide ions:

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Key terms in this lesson

nucleophile
An atom or group of atoms that can donate a pair of electrons to form a new covalent bond.

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