JEE Advanced Chemistry question

Acid strength of HX (X = F, Cl, Br, I) is dependent on

(A)The electronegativity differences of H and X
(B)The tendency of the hydrated molecule to form H+
(C)Both (a) and (b)Correct
(D)None of the above

Answer: (C)

Solution

The observed acid-strength order in water, HF << HCl < HBr < HI, reflects two combined factors: the polarity of the H–X bond (related to the electronegativity difference, which favours easy charge separation) and, more decisively, the ease with which the hydrated species releases a proton

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Question ID VK-159343