Which of the statement is correct about $H_{2} O_{2}$ for above reaction? Hydrogen peroxide is:

an oxidising agent in both acidic and basic medium

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an oxidizing agent in acidic medium and reducing agent in basic medium

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a reducing agent in acidic and oxidizing agent in basic medium

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a reducing agent in both acidic and basic medium.

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Solution

The correct options are
C an oxidising agent in both acidic and basic medium
D a reducing agent in both acidic and basic medium.
1) Hydrogen peroxide acts as both a reducing and an oxidizing agent in both the mediums.
2) When $H_{2} O_{2}$ serves as an oxidizing agent, the oxygen of hydrogen peroxide (that is present in $- 1$ oxidation state) is reduced to $H_{2} O$ ( $- 2$ : oxidation state).

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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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