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Question

Identify oxidant and reductant in the following redox reactions.
2K2MnO4+Cl22KCl+2KMnO4

A
Oxidant: Cl2 ; Reductant: KCl
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B
Oxidant: Cl2 ; Reductant: K2MnO4
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C
Oxidant: K2MnO4 ; Reductant: Cl2
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D
None of these
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Solution

The correct option is B Oxidant: Cl2 ; Reductant: K2MnO4
Here, in this reaction Cl2 is the oxidant and K2MnO4 is reductant.
Because the oxidation state of Cl2 changes 01, and decrease in oxidation state means it is reducing and self reducing is always oxidant for other.
And Mn O.S. is changing +6 to +7, so Mn is increasing oxidation state so oxidising and as self oxidising is reductant for other. So this reductant.

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