TS EAMCET · Chemistry · Carboxylic Acid Derivatives

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

A
A B C D
IV. I III II
B
A B C D
I IV. II III
C
A B C D
IV I. II III
D
A B C D
IV III II I

Verified Solution

Answer & Solution

Correct Answer

(A)

A	B	C	D
IV.	I	III	II

Step-by-step Solution

Detailed explanation

The acidity of carboxylic acid is directly proportional to the acid dissociation constant. But it is inversely proportional to the pKa value because the pKa is equal to the -logKa. So, the order of acidity of given acids depends upon the -M,-I effect. It is directly proportional…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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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)	$4.76$

Match the followingColumn-1 AcidColumn-2pKa valueA)CH3COOHI)0.23B)F3CCOOHII)3.41C)III)4.19D)IV)4.76The correct match is

Step-by-step Solution

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