Which of the following reactions are disproportionation reaction? (a) 2Cu+ $ \to $ Cu2+ + Cu0 (b) 3MnO42+ + 4H+ $ \to $ 2MnO4- + MnO2 + 2H2O (c) 2KMnO4 $$\buildrel \Delta \over \longrightarrow $$ K2MnO4 + MnO2 + O2 (d) 2MnO4- + 3Mn2+ + 2H2O $ \to $ 5MnO2 + 4${H^ \oplus }$ Select the correct option from the following :

Question

Which of the following reactions are disproportionation reaction?

(a) 2Cu⁺ $ \to $ Cu²⁺ + Cu⁰
(b) 3MnO₄²⁺ + 4H⁺ $ \to $ 2MnO₄^- + MnO₂ + 2H₂O
(c) 2KMnO₄ $$\buildrel \Delta \over \longrightarrow $$ K₂MnO₄ + MnO₂ + O₂
(d) 2MnO₄^- + 3Mn²⁺ + 2H₂O $ \to $ 5MnO₂ + 4${H^ \oplus }$

Select the correct option from the following :

(a), (c) and (d)

(a) and (b) only

(a) and (d) only

(a), (b) and (c)

Solution

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