JEE Advanced Chemistry question

Statement 1: Highly charged cations are expected to form most strongly acidic hydrated cations Statement 2: The acidity of a hydrated metal ion depends on the strength of the bond between cation and oxygen

(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 AssertionCorrect
(C)Assertion is True, Reason is False
(D)Assertion is False, Reason is True

Answer: (B)

Solution

Trivalent (highly charged) cations are, as a group, more acidic than divalent cations, which in turn are more acidic than monovalent cations (whose acidity is usually negligible) — so Statement 1 is true as a general trend. It is also true that when the cation–oxygen bond in is strong, it weakens

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Question ID VK-160000