Alcohols Phenols And Ethers Ques 13
13. $HBr$ reacts fastest with
[1992]
(a) 2-Methylpropan-1-ol
(b) 2-Methylpropan-2-ol
(c) propan-2-ol
(d) propan-1-ol.
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Answer:
Correct Answer: 13.(b)
Solution:
(b) Since 2-methylpropan-2-ol generates $3^{\circ}$ carbocation, therefore, it reacts fastest with $HBr$.
NOTES
Greater the stability of the intermediate carbocation, more reactive is the alcohol.