In neutral or faintly alkaline medium, KMnO being a powerful oxidant can oxidize, thiosulphate almost quantitatively, to sulphate. In this reaction overall change in oxidation state of manganese will

Question

In neutral or faintly alkaline medium, KMnO being a powerful oxidant can oxidize, thiosulphate almost quantitatively, to sulphate. In this reaction overall change in oxidation state of manganese will be : 4

(A) 5
(B) 1
(C) 0
(D) 3

Prashant Kotian · Accepted Answer

Correct answer: D) 3. In this reaction the overall change in oxidation state of manganese is 7 - 4 = 3.

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