The order of acidic strength of X, Y and Z is | vedclass

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

Question

(D) $1$. $X$ is $o$-nitrophenol,$Y$ is $p$-nitrophenol,and $Z$ is $2,4,6$-trinitrophenol (picric acid).$2$. The acidic strength of phenols increases w

Vedclass · Accepted Answer

$Z > Y > X$

Vedclass · Answer

(D) $1$. $X$ is $o$-nitrophenol,$Y$ is $p$-nitrophenol,and $Z$ is $2,4,6$-trinitrophenol (picric acid).$2$. The acidic strength of phenols increases with the presence of electron-withdrawing groups $(-NO_2)$ on the benzene ring due to the stabilization of the phenoxide ion.$3$. $Z$ ($2,4,6$-trinitrophenol) has three $-NO_2$ groups,which exert a strong $-I$ and $-M$ effect,making it the most acidic.$4$. Between $X$ ($o$-nitrophenol) and $Y$ ($p$-nitrophenol),$p$-nitrophenol $(Y)$ is more acidic than $o$-nitrophenol $(X)$ because $o$-nitrophenol forms intramolecular hydrogen bonding,which stabilizes the molecule and makes the release of the $H^+$ ion slightly more difficult compared to $p$-nitrophenol.$5$. Therefore,the order of acidic strength is $Z > Y > X$.

List-$I$ (Compound)	List-$II$ $(pK_a)$
$A$. $p-$Nitrophenol	$I$. $7.1$
$B$. Phenol	$II$. $10.0$
$C$. Ethanol	$III$. $15.9$
$D$. $p-$Cresol	$IV$. $10.2$

The order of acidic strength of $X, Y$ and $Z$ is:
Phenol reacts with dilute $HNO_3$ to form $X$ ($o$-nitrophenol) and $Y$ ($p$-nitrophenol). Phenol reacts with concentrated $HNO_3$ and $H_2SO_4$ to form $Z$ ($2,4,6$-trinitrophenol or picric acid).

Similar Questions

Match the following:
List-$I$ (Compound) List-$II$ $(pK_a)$
$A$. $p-$Nitrophenol $I$. $7.1$
$B$. Phenol $II$. $10.0$
$C$. Ethanol $III$. $15.9$
$D$. $p-$Cresol $IV$. $10.2$
The correct answer is

In Kolbe's reaction,instead of phenol,the phenoxide ion is treated with carbon dioxide. Why?

$A$ reaction of phenol with chloroform in the presence of sodium hydroxide to form salicylaldehyde is known as

Which of the following substances does not contain a $-COOH$ group?

Which of the following is phenolic?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

The order of acidic strength of $X, Y$ and $Z$ is:Phenol reacts with dilute $HNO_3$ to form $X$ ($o$-nitrophenol) and $Y$ ($p$-nitrophenol). Phenol reacts with concentrated $HNO_3$ and $H_2SO_4$ to form $Z$ ($2,4,6$-trinitrophenol or picric acid).