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The rate of dehydrohalogenation of which...

The rate of dehydrohalogenation of which one among the following is less ?

A

`CH_(3)CH_(2)CH_(2)Br`

B

`CH_(3)CH_(2)CH_(2)Cl`

C

`CH_(3)CH_(2)CH_(2)I`

D

`CH_(3)-underset(CH_(3))underset(|)(CH)-CH_(2)I`

Text Solution

Verified by Experts

The correct Answer is:
B
Dehydrohalogenation reaction order is alkyl halide relative reactivity order is `3^(@)gt2^(@)gt1^(@)` Alkyl halide reactivity order is
`IgtBrgtClgtF` (in `beta` elimination of F is rarely used). When heated with strong base, alkyl halides typically undergo a 1, 2-elimination reaction to generate alkenes.
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