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[Chemical Knowledge]：Unique reagent, revealing the difference between hexanol and phenol

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Reagent is an indispensable tool in chemical research and experiment. After long-term development, thousands of reagents have been developed. In chemical experiments, it is particularly important to distinguish between different compounds. Today, we will focus on two common compounds: hexanol and phenol, and introduce the reagents used to distinguish them.

let us understand the basic properties of hexanol and phenol. Cyclohexanol, chemical formula C6H12O, is a colorless liquid, dense and volatile. Phenol, chemical formula C6H6O, is a toxic white solid crystals, often aromatic. The two have some similarities in appearance, so they need to be distinguished by reagents.

reagents commonly used to distinguish between cyclohexane alcohol and phenol are: iodine water, potassium iodate and sodium carbonate solution. Below we introduce their principles and methods of use.

iodine water. A small amount of iodine is added dropwise to the substance to be tested. If it is cyclohexane alcohol, the solution becomes brown, and if it is phenol, the solution is still dark purple. This is because the cyclohexane alcohol contains double bonds, iodine water can occur addition reaction, resulting in brown precipitate, and phenol can not.

followed by potassium iodate. Mix the test substance with potassium iodate solution. If the liquid turns brown, it is cyclohexane alcohol, and if the liquid turns purple black, it is phenol. This reaction is due to the fact that potassium iodate can oxidize with cyclohexane alcohol to generate a brownish yellow substance, while reacting with phenol to generate a purple black precipitate.

finally sodium carbonate solution. Mix the test substance with sodium carbonate solution. If the liquid turns white and turbid, it is cyclohexane alcohol, and if there is no obvious change, it is phenol. This is because cyclohexane alcohol can react with sodium carbonate to form a white precipitate, while phenol cannot.

Through the use of the above three reagents, we succeeded in distinguishing between cyclohexane alcohol and phenol. These reagents play a vital role in chemical experiments and facilitate our better understanding and utilization of these compounds.

In summary, cyclohexane alcohol and phenol are two common compounds in the chemical field. They are similar in appearance but can be easily distinguished by the use of specific reagents. Iodine water, potassium iodate and sodium carbonate solutions are reagents commonly used to distinguish between hexanol and phenol. I hope that through the introduction of this article, you have a deeper understanding of the distinction between these two compounds.

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