Identify the correct order of acidic strength | vedclass

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

Question

(B) The acidic strength of substituted phenols depends on the electronic effects of the substituents.$1$. $Para$-nitrophenol $(II)$ has a strong $-M$

Vedclass · Accepted Answer

$II > I > III$

Vedclass · Answer

(B) The acidic strength of substituted phenols depends on the electronic effects of the substituents.$1$. $Para$-nitrophenol $(II)$ has a strong $-M$ (mesomeric) and $-I$ (inductive) effect from the $-NO_2$ group at the para position,which significantly stabilizes the phenoxide ion.$2$. $Ortho$-nitrophenol $(I)$ also has $-M$ and $-I$ effects,but it forms an intramolecular hydrogen bond,which slightly reduces the stability of the phenoxide ion compared to the para isomer.$3$. $Meta$-nitrophenol $(III)$ only exhibits the $-I$ effect because the $-M$ effect does not operate at the meta position. Therefore,it is the least acidic among the three.Thus,the correct order of acidic strength is $II > I > III$.

Identify the correct order of acidic strength for the following compounds:
$I$. Ortho-nitrophenol
$II$. Para-nitrophenol
$III$. Meta-nitrophenol

Similar Questions

The correct order of boiling point for the given compounds is:

The correct order of acid strength of the following substituted phenols in water at $28^{\circ} C$ is:

Arrange the following compounds in the increasing order of their acidic strength :
$i$. $m-$nitrophenol
$ii$. $m-$cresol
$iii$. phenol
$iv$. $m-$chlorophenol

Which compound has hydrogen bonding?

What will be the product $X$ in the following reaction?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Identify the correct order of acidic strength for the following compounds:$I$. Ortho-nitrophenol$II$. Para-nitrophenol$III$. Meta-nitrophenol