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Hydrogen Peroxide

A simple meth...

Question

A simple method to remove peroxides from ether is to treat them with an aqueous solution of:

K I

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K C N S

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N a_{2} S_{2} O_{3}

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B r_{2}

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Solution

The correct option is A $K I$
Ether peroxide oxidizes KI into $I_{2}$ and itself get reduced to ether
Therefore KI is added to remove peroxide from ethers
$2 I^{-} \to I_{2} + 2 e^{-}$
$e t h e r - p e r o x i d e + 2 e^{-} \to e t h e r + O_{2}$

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