Solution of problem 614 of the collection on general ch

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614. Which of the above reactions refer to the reactions of intermolecular oxidation-reduction, to the reactions of intramolecular oxidation-reduction and to disproportionation reactions?
A) 4KMnO4 + 4KOH = 4K2MnO4 + O2 + 2H2O
B) H2SO3 + 2H2S = 3S + 3H2O
C) NH4NO2 = N2 + 3H2O
D) 4P + 3KOH + 3H2O = PH3 + 3KH2PO2
E) 2H2O2 = 2H2O + O2
E) 2KMnO4 + 3MnSO4 + 4H2O = 5MnO2 + K2SO4 + 2H2SO4


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