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Hydrogen Peroxide

When I- is ox...

Question

When $I^{-}$ is oxidized by $M n O_{4}^{-}$ in faintly alkaline medium, $I^{-}$ is convered into ?

I O_{3}^{-}

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I_{2}

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I O_{4}^{- 3}

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I O^{- 2}

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Solution

The correct option is A $I O_{3}^{-}$
In neutral or faintly alkaline solutions:
A notable reaction is the oxidation of iodide to iodate:
$2 M n O_{4}^{-} + H_{2} O + I^{-} \to 2 M n O_{2} + 2 O H^{-} + I O_{3}^{-}$

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