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  • Which of the following reactions are disproportionation reactions? (i) a, b (ii) a, b, c (iii) b, c, d (iv) a, d

Which of the following reactions are disproportionation reactions?

(a) \text {Cu}^{+}\rightarrow \text {Cu}^{2+}+\text {Cu}

(b) \text {3MnO}_{4}^{-}+\text {4H}^{+}\rightarrow \text {2MnO}_{4}^{-}+\text {MnO}_{2}+\text {2H}_{2}\text {O}

(c) \text {2KMnO}_{4}\rightarrow \text {K}_{2}\text {MnO}_{4}+\text {MnO}_{2}+\text {O}_{2}

(d) \text {2MnO}_{4}^{-}+\text {3Mn}^{+2}+\text {2H}_{2}\text {O}\rightarrow \text {5MnO}_{2}+\text {4H}^{+}

(i) a, b

(ii) a, b, c

(iii) b, c, d

(iv) a, d

Answers (1)

The answer is the option (i). Disproportionation reaction is where an element is simultaneously oxidised and reduced.

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infoexpert23

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