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HBr reacts fastest with...

`HBr` reacts fastest with

A

2 - Methylpropan -1- ol

B

2 - Methylpropan - 2 - ol

C

propan - 2- ol

D

propan - 1 - ol.

Text Solution

Verified by Experts

The correct Answer is:
B
Greater the stability of the intermediate carbocation, more reactive is the alcohol. Since 2 - methylpropan -2- ol generates `3^(@)` carbocation, therefore, it react fastest with `HBr`.
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Knowledge Check

  • HBr reacts faster with:

    A
    2-Methyl propan-2-ol
    B
    propaan-1-ol
    C
    Propan-2-ol
    D
    2-Methyl propan-1-ol

  • HBr reacts slowest with

    A
    `2`-methylpropan-`2-ol`
    B
    propan-`1-ol`
    C
    propan-`2-ol`
    D
    2-methylpropan-1-ol

  • Which of the following reacts fastest with HBr?

    A
    B
    C
    D

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