Of the following alcohols,the one that would | vedclass

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

Question

(C) The reaction of alcohols with conc. $HCl$ and anhydrous $ZnCl_{2}$ is known as the Lucas test. This reaction proceeds via an $S_{N}1$ mechanism,wh

Vedclass · Accepted Answer

$2-$methylpropan$-2-$ol

Vedclass · Answer

(C) The reaction of alcohols with conc. $HCl$ and anhydrous $ZnCl_{2}$ is known as the Lucas test. This reaction proceeds via an $S_{N}1$ mechanism,where the rate-determining step is the formation of a carbocation. Therefore,the reactivity of alcohols follows the order: $3^{\circ} > 2^{\circ} > 1^{\circ}$. Among the given options: $A$. Butan$-1-$ol is a $1^{\circ}$ alcohol. $B$. Butan$-2-$ol is a $2^{\circ}$ alcohol. $C$. $2-$methylpropan$-2-$ol is a $3^{\circ}$ alcohol. $D$. $2-$methylpropan$-1-$ol is a $1^{\circ}$ alcohol. Since $3^{\circ}$ alcohols form the most stable carbocation,$2-$methylpropan$-2-$ol reacts fastest.

Of the following alcohols,the one that would react fastest with conc. $HCl$ and anhydrous $ZnCl_{2}$ is,

Similar Questions

$1-$Propanol can be distinguished from $2-$propanol by which test?

Which of the following are not cleaved by $HIO_4$?
$I :$ glycerol
$II :$ glycol
$III :$ $1,3-$propanediol
$IV :$ methoxy$-2-$propanol

Which of the following compounds has the highest boiling point?

$HO-CH_2-CH_2-OH$ on heating with periodic acid gives:

Which of the following alcohols will yield alkyl chloride at once on reaction with concentrated $HCl$ and $ZnCl_2$ at room temperature?

Vedclass Test Series

Exam Paper Generator

Online Exam Module