Which of the following is a comproportionation reaction ?

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None of these

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Solution

The correct option is A

Comproportionation reaction is the reverse of disproportionation reaction. For example, $B r^{-}$ and $B r O_{3}^{-}$ in acidic medium undergoes oxidation and reduction respectively to give $B r_{2}$ .

$[2 B r^{-} ⟶ B r_{2} + 2 e^{-}] \times 5$

$12 H^{+} + 10 e^{-} + 2 B r O_{3}^{-} ⟶ B r_{2} + 6 H_{2} O$

Adding the above two reactions, we have:

$10 B r^{-} + 2 B r O_{3}^{-} + 12 H^{+} ⟶ 6 B r_{2} + 6 H_{2} O$

$5 B r^{-} + B r O_{3}^{-} + 6 H^{+} ⟶ 3 B r_{2} + 3 H_{2} O$

Suggest Corrections

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15 S e

S e C l_{4}

4 A l C l_{3}

\to

2 S e_{8}

A l C l_{4}

_{2}

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