why is pure acetic acid called glacial_

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2. Gas Chromatography (GC) This technique separates and analyzes compounds in a mixture. By utilizing GC, the specific concentration of acetic acid can be determined, alongside the identification and quantification of any impurities.

Moreover, glacial acetic acid can be mixed with other solvents to modify its conductivity. For instance, when mixed with water, its conductivity increases significantly due to the enhanced ionization of acetic acid in the presence of water. This property is harnessed in various electrochemical applications, where controlling conductivity is essential for optimal performance.

In summary, glacial acetic acid plays a pivotal role in the preparation of acetanilide due to its effectiveness as a solvent and a reagent. Its favorable physical and chemical properties facilitate the acetylation of aniline while minimizing side reactions and undesirable byproducts. As research and applications in organic synthesis continue to evolve, glacial acetic acid remains a staple reagent in the toolbox of chemists, ensuring that the preparation of acetanilide and other important compounds can be carried out efficiently and safely. Hence, its utilization underscores the balance of efficacy, safety, and cost-effectiveness in synthetic organic chemistry.

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For instance, when testing for phenolic compounds, the addition of ferric chloride solution to a mixture containing glacial acetic acid can result in the formation of a colored complex, which indicates the presence of phenols. Similarly, in testing for aldehydes, glacial acetic acid can be used in the Benedict's test, where a characteristic color change signals the chemical action of aldehydes in the solution.