JEE Main · 2006 · 30 Apr 2006 · Offline · p-Block Elements

What products are expected from the disproportionation reaction of hypochlorous acid?

(A) $HClO_{3}$ and $Cl_{2} O$
(B) $HCIO_{2}$ and $HCIO_{4}$
(C)HCl and $Cl_{2} O$
(D)HCl and $HClO_{3}$ ✓ Correct

Answer: (D)

Solution

Disproportionation means one element is at once oxidised and reduced. In hypochlorous acid the chlorine is in the

+ 1

state; on disproportionation part of it is reduced to the

- 1

state in HCl while the rest is oxidised to the

+ 5

state in

HCl O_{3}

, following

3HClO \to HCl O_{3} + 2HCl

. The products expected are therefore HCl and

HCl O_{3}

JEE Main · 2006 · 30 Apr 2006 · Offline · Single correct option

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