Which of the following is most acidic?

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

Question

(A) The acidity of phenols increases with the presence of electron-withdrawing groups $(-NO_2)$ on the benzene ring due to the $-I$ and $-M$ effects.P

Vedclass · Accepted Answer

Picric acid

Vedclass · Answer

(A) The acidity of phenols increases with the presence of electron-withdrawing groups $(-NO_2)$ on the benzene ring due to the $-I$ and $-M$ effects.Picric acid ($2,4,6-$trinitrophenol) contains three $-NO_2$ groups at the $ortho$ and $para$ positions,which exert a strong electron-withdrawing effect,significantly stabilizing the phenoxide ion.Comparing the options:$1$. Picric acid ($3$ $-NO_2$ groups)$2$. $o,p-$dinitrophenol ($2$ $-NO_2$ groups)$3$. $p-$nitrophenol ($1$ $-NO_2$ group)$4$. $m-$nitrophenol ($1$ $-NO_2$ group)Therefore,Picric acid is the most acidic.

Similar Questions

The major product of the following reaction is:

Which reagent is used in the conversion of phenol to picric acid?

In the Reimer-Tiemann formylation reaction,by how much does the molecular weight of phenol increase?

The reaction,
$C_6H_5OH + CHCl_3 \xrightarrow{NaOH/\Delta} \text{o-hydroxybenzaldehyde} + H^+$
is known as:

Carbolic acid is oxidised by acidified sodium dichromate to give

Vedclass Test Series

Exam Paper Generator

Online Exam Module