What Is Baeyer’s Reagent?

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Baeyer’s reagent, a significant tool in organic chemistry, plays a crucial role in identifying unsaturation in organic compounds. In this article, we will delve into the intricacies of Baeyer’s reagent, exploring its formula, reactions, and applications in the realm of alkene and alkyne chemistry.

What Is Baeyer’s Reagent?

Baeyer’s reagent is a powerful chemical solution utilized for the detection of unsaturation, particularly in compounds containing double or triple bonds. This reagent is instrumental in identifying the presence of unsaturated functional groups in organic molecules.

Baeyer’s Reagent Formula:

The chemical formula of Baeyer’s reagent is often represented as a solution of potassium permanganate (KMnO₄) in alkaline medium. The specific composition allows it to react selectively with unsaturated compounds, showcasing distinctive color changes.

What Is Baeyer’s Reagent Class 12:

In the Class 12 chemistry curriculum, Baeyer’s reagent finds its place in the study of organic chemistry. Students explore its applications and reactions as part of their understanding of the properties and behavior of different functional groups.

What Is Baeyer’s Reagent Class 12 Which Chapter:

Baeyer’s reagent is typically covered in the organic chemistry section of Class 12. It is often discussed in chapters related to hydrocarbons, alkenes, and alkynes, providing students with a comprehensive understanding of its role in identifying unsaturation.

Baeyer’s Reagent Mechanism:

The mechanism of Baeyer’s reagent involves the oxidation of double or triple bonds present in unsaturated compounds. The purple color of the permanganate ion (MnO₄⁻) in the reagent changes to brown as it reacts with the unsaturated functional groups, allowing for easy detection.

Baeyer’s Reagent Reaction:

When Baeyer’s reagent reacts with an unsaturated compound like an alkene or alkyne, the purple color of the reagent fades, indicating the formation of brown manganese dioxide. This reaction serves as a qualitative test for the presence of unsaturation in organic molecules.

Baeyer’s Reagent Function:

The primary function of Baeyer’s reagent is to identify and confirm the presence of unsaturated functional groups in organic compounds. Its selective reactivity with double and triple bonds makes it a valuable tool in organic chemistry laboratories for qualitative analysis.

Baeyer’s Reagent With Alkene:

When Baeyer’s reagent reacts with an alkene, the double bond undergoes oxidative cleavage, resulting in the formation of two carbonyl groups. This reaction provides a distinctive change in color, aiding chemists in identifying the unsaturated nature of the compound.

Baeyer’s Reagent With Alkyne:

Similarly, Baeyer’s reagent reacts with alkynes, causing oxidative cleavage of the triple bond. This reaction leads to the formation of carbonyl compounds and provides chemists with a clear indication of the presence of unsaturation in the organic molecule.


In conclusion, Baeyer’s reagent is a valuable tool in organic chemistry, allowing chemists to identify unsaturation in organic compounds through distinctive color changes. Its application with alkenes and alkynes, along with the understanding of its mechanism and reactions, makes it an essential component in qualitative analysis and the study of unsaturated functional groups.


What Is The Baeyer’s Test Class 11?

-Baeyer’s test is basically a test for unsaturation. In this test addition of bromine is done to a double bond, which results in the rapid decolourization of bromine water or bromine dissolved in carbon tetrachloride, is taken as a test for unsaturation.

What Is Bayer’s Reagent In Ncert?

– An alkaline solution of cold potassium permanganate is known as Bayer’s reagent, which is a powerful oxidant. – It dissolves in water to give purple colour. – On evaporation it leaves prismatic purplish-black glistening crystals.

What Is Baeyer’s Test And Its Uses?

The baeyers test is used to test for an unsaturated carbon carbon bond, such as an alkene or alkyne, but not an aromatic carbon carbon bond. Potassium permanganate (KMnO4) solution is a purple color.

What Is Bears Agent?

This reagent is basically the cold Potassium permanganate solution that must be alkaline in nature. Actually, it is a strong oxidizing agent that can be further utilized for the purpose of organic analysis. This is a violet color solution.

I Have Covered All The Following Queries And Topics In The Above Article

Baeyer’s Reagent With Alkene

Baeyer’s Reagent Formula

Baeyer’s Reagent Class 12 Which Chapter

What Is Baeyer’s Reagent Class 12

Baeyer’s Reagent Mechanism

Baeyer’s Reagent Reaction

Baeyer’s Reagent Function

Baeyer’s Reagent With Alkyne

What Is Baeyer’s Reagent