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

Aicharya · Accepted Answer

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 I) 0 . 23 B) F 3 CCOOH II) 3 . 41 C) III)…

Solution

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)	$4.76$

A	B	C	D
IV.	I	III	II

A	B	C	D
I	IV.	II	III

A	B	C	D
IV	I.	II	III

A	B	C	D
IV	III	II	I