Question:

The reaction, $2H_{2}O_{2} \to 2H_{2}O +O_{2} ; $ shows that $H_{2}O_{2}$

Updated On: Aug 1, 2022

is decomposed
acts as oxidising agent
acts as reducing agent
none of the above

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The Correct Option is A

Solution and Explanation

$H_2O_2$ decomposes on standing or heating (auto oxidation reduction). $ {2H_2\overset{-1}{O_2} -> 2H2}$$ {\overset{-2}{O} +O_2}$

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Concepts Used:

Hydrogen Peroxide

Hydrogen peroxide is a chemical element including hydrogen and oxygen. Anhydrous hydrogen peroxide is a colorless, sugary liquid that breaks down quickly into oxygen and water. The chemical formula for hydrogen peroxide [H₂O₂] is H—O—O—H, here, each dash represents a single covalent link. Especially, each bond has a pair of mutual electrons, one from each of the atoms at the bond’s ends. The polar bonds are H—O bonds, but this is not the polar one - O—O bonds.

Physical Properties:

In its pure state, hydrogen peroxide is an entirely transparent colorless liquid with a nitric acid-like odor.
The consistency of hydrogen peroxide is far better than that of water. It has a density of about 40% that of water.

Chemical Properties:

It dissolves in water, which after getting mixed with water produces a homogenous solution.
Naturally acidic in nature.
The oxidizing agent H₂O₂ is quite powerful. As a derivative, it gives up one oxygen atom and forms water.