Which is the most powerful reducing agent in the halide ions?

I^{-}

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C l^{-}

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F^{-}

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None of these

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Solution

The correct option is A $I^{-}$
Iodine is the least electronegative amongst all. So it will be easier for $I^{-}$ to lose an electron and act as reducing agent.

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I^{-}

Question 6

Consider the reactions

(i) $H_{2} O_{2} + 2 H I \to I_{2} + 2 H_{2} O$
(ii) $H O C l + H_{2} O_{2} \to H_{3} O^{+} C l^{-} + O_{2}$

Which of the following statements is correct about $H_{2} O_{2}$ with reference to these reactions? Hydrogen peroxide is ........

(a) an oxidising agent in both (i) and (ii)

(b) an oxidising agent in (i) and reducing agent in (ii)

(d) a reducing agent in both (i) and (ii)

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