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  4. In aqueous alkaline solution, two electron reduction of HO-2 gives

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Q. In aqueous alkaline solution, two electron reduction of $HO^-_2$ gives

WBJEEWBJEE 2015Redox Reactions

Solution:

In aqueous alkaline solution, two electron reduction of $HO _{2}^{-}$gives $\overset{-}{ O } H$. The reaction is as follows:
$H _{2} O _{2} \rightleftharpoons H ^{+}+ HO _{2}^{-}$
$HO _{2}^{-}+ H _{2} O +2 e ^{-} \longrightarrow 3 \overset{-}{ O } H$