What functional group is present in the molecule ethyl ethanoate (CH₃COOCH₂CH₃)?
Answer and explanation
Correct answer: D. Ester
- Step 1: Examine the chemical formula: a carbonyl group (C=O) bonded directly to an oxygen atom which is connected to an alkyl group (-COO-R).
- Step 2: This characteristic linkage represents an ester functional group.
Answer
Ester.
Why not the others: Ketones have C=O bonded to two carbons; ethers have an -O- bridge without a carbonyl; carboxylic acids have a terminal -COOH.
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