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Alcohols and Phenols: Properties and Differences

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Alcohols and Phenols: Properties and Differences

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Questions and Answers

What is the main difference between an alcohol and a phenol?

The type of carbon atom bonded to the hydroxyl group

The presence of an aromatic ring (correct)

The absence of a hydroxyl functional group

The acidity of the compound in aqueous solutions

Why are additional tests used to identify alcohols and phenols?

Because of their distinct chemical properties

Because solubility in water is not a unique characteristic (correct)

Because of their varied solubility in water

Because of their similar physical properties

What is the purpose of the Lucas test?

To identify the type of carbon atom bonded to the hydroxyl group

To determine the solubility of the compound in water

To determine the acidity of phenol

To distinguish between alcohols and phenols (correct)

What is observed in the procedure to determine the physical properties of alcohols and phenols?

Whether the solutions are homogeneous or heterogeneous Signup and view all the answers

Why are different tests used to determine the chemical properties of alcohols and phenols?

Because of the structural variations between alcohols and phenols Signup and view all the answers

What is the purpose of diluting the samples with distilled water in the procedure?

To prepare the solutions for the tests Signup and view all the answers

What is the purpose of adding 2 ml of water to each test tube in the Iodoform test?

To create a homogeneous mixture Signup and view all the answers

What is the function of the Lucas reagent in the Lucas test?

To form a cloudiness in tertiary alcohols Signup and view all the answers

What is the indication of a positive chromic acid test?

The loss of the brown-red color Signup and view all the answers

What is the purpose of warming the test tubes in the Iodoform test?

To increase the reaction rate Signup and view all the answers

What is the purpose of adding 10% NaOH dropwise to each test tube in the Iodoform test?

To create a basic medium for the reaction Signup and view all the answers

What is the indication of a positive Iron(III) chloride test?

A purple color forms Signup and view all the answers