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Hydrogen peroxide acts both as an oxidizing and as a reducing

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Hydrogen peroxide acts both as an oxidizing and as a reducing agent in alkaline solution towards certain first-row transition metal ions. Illustrate both these properties of $H_{2} O_{2}$ using chemical equations.

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Hydrogen peroxide acts both as an oxidizing and as a reducing agent in alkaline solution towards certain first-row transition metal ions. Illustrate both these properties of

H_{2} O_{2}

using chemical equations.

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Text solutionVerified

As oxidizing agent:

H_{2} O_{2} + 2 e^{-} \to 2 O H^{-}

2 C r (O H)_{3} + 4 N a O H + 3 H_{2} O_{2} \to 2 N a_{2} C r O_{4} + 8 H_{2} O

The oxidation number of chromium increases from +3 to +6.

As reducing agent:

H_{2} O_{2} + 2 O H^{-} \to O_{2} + 2 H_{2} O + 2 e^{-}

2 K_{3} [F e (CN)_{6}] + 2 K O H + H_{2} O_{2}

\to 2 K_{4} [F e (CN)_{6}] + 2 H_{2} O + O_{2}

The oxidation number of iron decrease from +3 to +2.

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Question Text	Hydrogen peroxide acts both as an oxidizing and as a reducing agent in alkaline solution towards certain first-row transition metal ions. Illustrate both these properties of $H_{2} O_{2}$ using chemical equations.
Answer Type	Text solution:1
Upvotes	150

Hydrogen peroxide acts both as an oxidizing and as a reducing agent in alkaline solution towards certain first-row transition metal ions. Illustrate both these properties of H2​O2​ using chemical equations.

Text solutionVerified

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Hydrogen peroxide acts both as an oxidizing and as a reducing agent in alkaline solution towards certain first-row transition metal ions. Illustrate both these properties of $H_{2} O_{2}$ using chemical equations.