Which of the following acts as a stabilizer in the decomposition of H2O2?
- Urea
- Alkali
- Glass
- Dust
The Correct Option is A
Solution and Explanation
Stabilization and Decomposition of Hydrogen Peroxide (H2O2):
Hydrogen peroxide (H2O2) decomposes readily in the presence of light, heat, and impurities like dust or alkali. Urea acts as a stabilizer for hydrogen peroxide by forming a complex that reduces the rate of decomposition.
Analysis of Options:
- Dust: Catalyzes the decomposition of H2O2.
- Urea: Stabilizes H2O2 and reduces its decomposition.
- Glass containers: Do not actively stabilize H2O2.
- Alkali: Increases the decomposition rate of H2O2.
Conclusion: The correct answer is option (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.