Which functional group is present in ethanoic acid, CHCOOH?

Answer and explanation

Correct answer: B. Carboxyl group, COOH

  1. Step 1: Ethanoic acid is a carboxylic acid. Step 2. Carboxylic acids contain the carboxyl group, COOH. Answer: Carboxyl group, COOH. Why not the others: The hydroxyl group alone is found in alcohols such as ethanol, the aldehyde group is found in ethanal, and the ester group links two carbon chains in esters such as ethyl ethanoate.

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