Table of contents

2. Molecular Representations

Functional Groups

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Multiple Choice

Which of the following is a characteristic functional group of carboxylic acids?

Hydroxyl group (-OH)

Amino group (-NH2)

Carboxyl group (-COOH)

Carbonyl group (C=O)

Verified step by step guidance

Identify the functional groups listed in the problem: Hydroxyl group (-OH), Amino group (-NH2), Carboxyl group (-COOH), and Carbonyl group (C=O).

Understand the structure of a carboxylic acid, which is characterized by the presence of a carboxyl group.

The carboxyl group is a combination of a carbonyl group (C=O) and a hydroxyl group (-OH) attached to the same carbon atom.

Recognize that the carboxyl group (-COOH) is the defining functional group of carboxylic acids, giving them their acidic properties.

Conclude that among the options provided, the carboxyl group (-COOH) is the characteristic functional group of carboxylic acids.

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