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A blackish brown coloured solid ‘A’ when fused with alkali metal hydroxides in presence of air, produces a dark green coloured compound ‘B’, which on electrolytic oxidation in alkaline medium gives a dark purple coloured compound C. Identify A, B and C and write the reactions involved.-?

A blackish brown coloured solid ‘A’ when fused with alkali metal hydroxides in presence of air, produces a dark green coloured compound ‘B’, which on electrolytic oxidation in alkaline medium gives a dark purple coloured compound C. Identify A, B and C and write the reactions involved.-?

Grade:12

1 Answers

Sunil Kumar FP
askIITians Faculty 183 Points
7 years ago
a) Thus the following compounds are:-

A= MnO2 B= K2 MnO4 C= KMnO4

MnO2 + 4KOH + O2 → K2 MnO4 + 2H2 O

MnO4 2- →(electrolytic oxidation in alkaline solution) MnO4 -

(green) (purple)

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