Arrange the following in increasing order of | vedclass

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

Question

(A) Acidic character $\propto$ stability of conjugate base (phenoxide ion).The stability of the phenoxide ion is increased by electron-withdrawing gro

Vedclass · Accepted Answer

$I < IV < II < III$

Vedclass · Answer

(A) Acidic character $\propto$ stability of conjugate base (phenoxide ion).The stability of the phenoxide ion is increased by electron-withdrawing groups ($-M$ and $-I$ effects) and decreased by electron-donating groups ($+M$,$+H$,and $+I$ effects).The substituents are:$(I)$ $p$-methylphenol: $-CH_3$ group shows $+H$ and $+I$ effects,which destabilize the phenoxide ion.$(II)$ $m$-nitrophenol: $-NO_2$ group shows only $-I$ effect ($-M$ effect does not operate at $m$-position).$(III)$ $p$-nitrophenol: $-NO_2$ group shows both $-M$ and $-I$ effects,providing strong stabilization.$(IV)$ Phenol: No substituent.Comparing these,the order of stability of the conjugate base is: $p$-methylphenoxide Therefore,the increasing order of acidic character is: $I < IV < II < III$.

Arrange the following in increasing order of acidic character.

Similar Questions

The products formed in the reaction of cumene with $O_2$ followed by treatment with dil. $HCl$ are

The correct order of acidic strength of the following compounds:
$A.$ Phenol
$B.$ Cresol
$C.$ $m-$Nitrophenol
$D.$ $p-$Nitrophenol

Which of the following reacts with diazonium salts to form dyes?

The strongest acid among the following aromatic compounds is

Phenol on treatment with dil. $HNO_3$ gives two products $P$ and $Q$. $P$ is steam volatile but $Q$ is not. $P$ and $Q$ are,respectively:

Vedclass Test Series

Exam Paper Generator

Online Exam Module