Q.
With respect to hypochlorite, chlorate and perchlorate ions, choose the correct statement(s).
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a
The hypochlorite ion is the strongest conjugate base.
b
The molecular shape of only chlorate ion is influenced by the lone pair of electrons of Cl.
c
The hypochlorite and chlorate ions disproportionate to give rise to identical set of ions.
d
The hypochlorite ion oxidizes the sulfite ion.
answer is A.
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Detailed Solution
Hypochlorite ion : ClOΘChlorate ion : ClO3ΘPer chlorate ion : ClO4Θ1) Acidic order: HClO+1 ClO3–> ClO4– In chlorate ion bond angle changes due to presence of lone pair on chlorine atom. While hypochlorite ion is linear and perchlorate ion is tetrahedral and there is no effect of lone pair on hypochlorite ion(C) Disproportionation reaction of (i) hypochlorite ion : 3ClO⊖→2Cl−+ClO3θ (ii) Chlorate ion :4ClO3∘→3ClO4⊖+Cl⊖ (D) ClO−+SO32−→SO42−+ClB
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