MHT CET 2024 Chemistry question

What is the order of ease of dehydrohalogenation of alkyl halides?

(1)Correct
(2)
(3)
(4)

Answer: (1)

Solution

Dehydrohalogenation (elimination of HX by alcoholic KOH, an E2/E1 process) gives an alkene. The reaction is easier when the alkene formed is more highly substituted and more stable (Saytzeff rule) and when the more stable carbocation-like transition state is formed. A tertiary halide has the largest

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Question ID VK-095636