Which compound has the maximum value of pK_a | vedclass

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

Question

(D) The $pK_a$ value is inversely proportional to the acidity of the compound. Higher acidity corresponds to a lower $pK_a$ value.Nitro groups $(-NO_2

Vedclass · Accepted Answer

$C_6H_5OH$

Vedclass · Answer

(D) The $pK_a$ value is inversely proportional to the acidity of the compound. Higher acidity corresponds to a lower $pK_a$ value.Nitro groups $(-NO_2)$ are strong electron-withdrawing groups $(EWG)$ that increase the acidity of phenol by stabilizing the phenoxide ion through $-I$ and $-M$ effects.In $p-O_2N-C_6H_4-OH$,$m-O_2N-C_6H_4-OH$,and $o-O_2N-C_6H_4-OH$,the $-NO_2$ group increases acidity compared to phenol $(C_6H_5OH)$.Since $C_6H_5OH$ lacks any electron-withdrawing substituent,it is the least acidic among the given compounds.Therefore,$C_6H_5OH$ has the maximum $pK_a$ value.

Which compound has the maximum value of $pK_a$ among the following?

Similar Questions

What is $Y$ in the given reaction sequence?

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

Identify the missing reagent in the following reaction:

Rank the following compounds in order of increasing acidic strength.

How can phenol be converted to aspirin?

Vedclass Test Series

Exam Paper Generator

Online Exam Module