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

$A$ compound $'X'$ is acidic and it is soluble in $NaOH$ solution,but insoluble in $NaHCO_3$ solution. Compound $'X'$ also gives a violet colour with neutral $FeCl_3$ solution. The compound $'X'$ is:

Arrange water,ethanol and phenol in increasing order of acidity and give reason for your answer.

What is produced when phenol reacts with sodium?

Rank the following compounds in the order of increasing acidity:
$(I)$ Cyclohexanol
$(II)$ Cyclohexylamine
$(III)$ Phenol

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

Vedclass Test Series

Exam Paper Generator

Online Exam Module