JEE Main Chemistry question

Statement 1: The second dissociation constant of maleic acid is greater than fumaric acid. Statement 2: Higher the dissociation constant of acid, more is the acidic character.

(A)Assertion is True, Reason is True; Reason is correct explanation for Assertion
(B)Assertion is True, Reason is True; Reason is not correct explanation for Assertion
(C)Assertion is True, Reason is FalseCorrect
(D)Assertion is False, Reason is True

Answer: (C)

Solution

Statement 1 is actually false as commonly understood for this pair: maleic acid's FIRST dissociation constant is much larger than fumaric acid's (due to intramolecular H-bonding stabilizing its mono-anion), while its SECOND dissociation constant is instead SMALLER than fumaric acid's (because removing the second

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Question ID VK-149520