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Multiple Choice
Which functional group is present in the molecule CH3COOH?
A
Ketone
B
Ether
C
Carboxylic acid
D
Alcohol
Verified step by step guidance
1
Identify the molecular formula given: CH₃COOH.
Break down the formula: CH₃ represents a methyl group, COOH represents a carboxyl group.
Recognize that the COOH group is characteristic of carboxylic acids. It consists of a carbonyl group (C=O) bonded to a hydroxyl group (OH).
Understand that a ketone contains a carbonyl group (C=O) bonded to two carbon atoms, which is not the case here.
Note that an ether contains an oxygen atom bonded to two alkyl or aryl groups, and an alcohol contains a hydroxyl group (OH) bonded to a carbon atom, neither of which match the structure of CH₃COOH.