JEE Advanced 2020 Chemistry question

With respect to hypochlorite, chlorate and perchlorate ions, choose the correct statement(s).

(A)The hypochlorite ion is the strongest conjugate base.Correct
(B)The molecular shape of only chlorate ion is influenced by the lone pair of electrons of Cl.Correct
(C)The hypochlorite and chlorate ions disproportionate to give rise to identical set of ions.
(D)The hypochlorite ion oxidizes the sulfite ion.Correct

Answer: (A),(B),(D)

Solution

(A) Acid strength: ; the weakest acid has the strongest conjugate base, so is the strongest base – correct. (B) is diatomic and necessarily linear whatever the lone pairs; has no lone pair on Cl (tetrahedral); only in

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Question ID VK-033760