Match the following

Column-1
Acid Column-2
$pKa$ value

A) ${CH}_{3}COOH$ I) $0 . 23$

B) ${F}_{3}CCOOH$ II) $3 . 41$

C) III) $4 . 19$

D) IV) $4 . 76$

The correct match is

Question

Match the following Column-1 Acid Column-2 pKa value A) CH _ 3 COOH I) 0 . 23 B) F _ 3 CCOOH II) 3 . 41 C) III) 4 . 19 D) IV) 4 . 76 The correct match is

Quantrex Academy · Accepted Answer

Correct answer: A. A B C D IV. I III II

The acidity of carboxylic acid is directly proportional to the acid dissociation constant. But it is inversely proportional to the ${pK}_{a}$ value because the ${pK}_{a}$ is equal to the $- {logK}_{a}$ . So, the order of acidity of given acids depends upon the $- M, - I$ effect. It is directly proportional to the $- M, - I$ effect.

The acetic acid is least acidic. So, it has the ${pK}_{a}$ value of $4 . 76$ . After that acidity of benzoic acid. So, it has the ${pK}_{a}$ value of $4 . 19$ . After that acidity of $p -$ nitrobenzoic acid. So, it has the ${pK}_{a}$ value of $3 . 41$ . The compound ${F}_{3}CCOOH$ is most acidic. So, it has the ${pK}_{a}$ value of $0 . 23$ .

Match the following Column-1 Acid Column-2 pKa value A) CH _ 3 COOH...

Options

Correct answer

Step-by-step solution

More from Carboxylic Acid Derivatives

Column-1 Acid		Column-2 $pKa$ value
A)	${CH}_{3}COOH$	I)	$0 . 23$
B)	${F}_{3}CCOOH$	II)	$3 . 41$
C)		III)	$4 . 19$
D)		IV)	$4 . 76$