Which molecule is an alcohol among the following?

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Study for the IGCSE Edexcel Chemistry Test. Access flashcards and multiple choice questions with hints and explanations. Get ready for your exam!

Multiple Choice

Which molecule is an alcohol among the following?

Explanation:
Alcohols are molecules that contain a hydroxyl group (-OH) attached to a carbon atom. Among these formulas, the one with an -OH group is C4H9OH, which is butanol, an alcohol. The others show different functional groups or none at all: C2H5COOH and C3H7COOH have carboxyl groups (-COOH), identifying them as carboxylic acids; C4H8 is just a hydrocarbon with no -OH group. So the molecule with the hydroxyl group is the alcohol.

Alcohols are molecules that contain a hydroxyl group (-OH) attached to a carbon atom. Among these formulas, the one with an -OH group is C4H9OH, which is butanol, an alcohol. The others show different functional groups or none at all: C2H5COOH and C3H7COOH have carboxyl groups (-COOH), identifying them as carboxylic acids; C4H8 is just a hydrocarbon with no -OH group. So the molecule with the hydroxyl group is the alcohol.

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