Question:medium
The acid which has a peroxy linkage is
The acid which has a peroxy linkage is
Updated On: May 5, 2026
- sulphurous aci
- pyrosulphuric aci
- dithionic acid
- Caro- acid
Show Solution
The Correct Option is D
Solution and Explanation
To determine which acid contains a peroxy linkage, we need to understand what a peroxy linkage is. A peroxy linkage is characterized by an -O-O- linkage within a molecule. This is a common structural feature in peroxy acids.
Let's analyze the given options:
- Sulphurous Acid (H2SO3): Sulphurous acid is commonly known for having a structure without the presence of a -O-O- bond. It consists of sulphur, oxygen, and hydrogen but lacks the peroxy linkage.
- Pyrosulphuric Acid (Oleum, H2S2O7): Pyrosulphuric acid, also known as oleum, contains two sulfur atoms and more oxygen atoms than sulphuric acid but does not contain a peroxy linkage.
- Dithionic Acid (H2S2O6): Dithionic acid is known to contain two sulphur atoms but does not incorporate an -O-O- bond.
- Caro- Acid (Peroxymonosulfuric Acid, H2SO5): Caro's acid, also known as peroxymonosulfuric acid, is the acid that contains a peroxy linkage. Its structure can be represented as H-O-O-S(=O)2-OH. Clearly, it has the -O-O- bond required for the peroxy linkage.
Therefore, the correct answer to the question "The acid which has a peroxy linkage is" is Caro- acid.
This thorough examination of the structural details of each option clearly explains why Caro- acid is the only choice with a peroxy linkage.
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