Which of the reactants act as oxidant or reductant if any:

$2 I^{-} + H_{2} O_{2} \to 2 O H^{-} + I_{2}$

H_{2} O_{2}

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I^{-}

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Both of these

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None of these

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Solution

The correct option is C Both of these
The oxidation number of iodine increases from -1 to 0. Thus, $I^{-}$ is oxidized and acts as reductant.
The oxidation number of O decreases from -1 to -2. Thus, $H_{2} O_{2}$ is reduced and acts as oxidizing agent.

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