In the given pairs of alcohols,in which pair | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The reactivity of alcohols towards $HBr$ follows the order $3^\circ > 2^\circ > 1^\circ$ because the reaction proceeds via a carbocation intermedi

Vedclass · Accepted Answer

$CH_3-CH(OH)-CH_2-CH_3$ and $CH_3-C(OH)(CH_3)-CH_2-CH_3$

Vedclass · Answer

(D) The reactivity of alcohols towards $HBr$ follows the order $3^\circ > 2^\circ > 1^\circ$ because the reaction proceeds via a carbocation intermediate ($S_N1$ mechanism).In option $(D)$,the first alcohol is a secondary $(2^\circ)$ alcohol ($CH_3-CH(OH)-CH_2-CH_3$,butan$-2-$ol) and the second alcohol is a tertiary $(3^\circ)$ alcohol ($CH_3-C(OH)(CH_3)-CH_2-CH_3$,$2$-methylbutan$-2-$ol).Since a $3^\circ$ carbocation is more stable than a $2^\circ$ carbocation,the second alcohol is more reactive than the first.

In the given pairs of alcohols,in which pair is the second alcohol more reactive than the first towards hydrogen bromide $(HBr)$?

Similar Questions

Which of the following will not react with $NaOH$?

An alcohol $X$ $(C_5H_{12}O)$ on dehydration gives $Y$ (major product). Reaction of $Y$ with $HBr$ gave $Z$ ($C_5H_{11}Br$,major product). $Z$ undergoes nucleophilic substitution in two steps. What are $X$ and $Y$?

Which compound has the highest boiling point?

Which of the following would undergo dehydration most readily?

$pent-3-ol$ is a

Vedclass Test Series

Exam Paper Generator

Online Exam Module