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Question
Arrange primary, secondary and tertiary haloalkanes in the decreasing order of the ease of dehydrohalogenation.
Very Short Answer
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Solution
The ease of dehydrohalogenation (elimination of HX) of haloalkanes depends on the stability of the carbocation intermediate formed during the reaction. The stability order of carbocations is
Tertiary (3°) > Secondary (2°) > Primary (1°)
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