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# Engineering

The chemical nature of hydrogen peroxide is: 

Option 1) Oxidising agent in acidic medium but not in basic medium.

Option 2) Reducing agent in basic medium , but not in acidic medium .

Option 3) Oxidising and reducing agent in acidic medium , but not in basic medium .

Option 4) Oxidising and reducing agent in both acidic and basic medium 

Answers (1)
L Lovekush Kumar Saini

Hydrogen Peraoxide -

Discoverd by J - L Thena

- wherein

H_{2}O_{2}

 

Structure of H2O2 (Hydrogen Peroxide) -

It is non planar molecule.

- wherein

 

Decomposition -

It decomposes slowly on exposure to light

- wherein

 

Acidic Nature -

It is a weak acid turn blue litmus red only in pure state.

- wherein

H_{2}O_{2}\rightleftharpoons H^{+}+HO_{2}^{-}

 

Oxidising Nature -

It acts as oxidising agent in both acidic and alkaline solution.

- wherein

Acidic solution H2O2 reduced to H2O

 

Reducing Nature -

H2O2 acts as reducing agent.

- wherein

H2O2 get oxidised to O2

 

Bleaching Properties -

It bleaches delicates materials like Silk, Wool.

- wherein

H_{2}O_{2}\rightarrow H_{2}O+\left [ O \right ]

Colouring matter + \left [ O \right ] \rightarrow Colourless

As we have learnt in peroxides and superoxides

H2O2 acts as oxidising agent and reducing agent in both acidic and basic medium.

As a oxidnat:

H_{2}O_{2} + 2H^{+} +2e^{-} \rightarrow 2H_{2}O\left ( ACIDIC \right )

H_{2}O_{2} +2e^{-} \rightarrow 2OH^{-}\left ( BASIC \right )

H2O2 acts as a reductant

H_{2}O_{2} \rightarrow 2H^{+} +O_{2}+2e^{-}\left ( ACIDIC \right )

H_{2}O_{2} +2OH^{-}\rightarrow 2H_{2} O + O_{2}+2e^{-}\left ( BASIC\right )

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