O Levels Chemistry (5070)•5070/12/M/J/23
Explanation
Ester nomenclature for propyl methanoate Steps:
- Identify the name: "propyl methanoate" means propyl from propanol (CH₃CH₂CH₂OH) and methanoate from methanoic acid (HCOOH).
- Form the ester: replace OH from acid and H from alcohol, yielding HCOOCH₂CH₂CH₃.
- Compare to choices: check each formula against this structure.
- Conclude: no choice matches HCOOCH₂CH₂CH₃.
Not enough information: None of the options represent propyl methanoate (HCOOCH₂CH₂CH₃).
Why the others are wrong:
- A: Ethyl ethanoate (CH₃COOCH₂CH₃), wrong acid and alcohol parts.
- B: Methyl propanoate (CH₃CH₂COOCH₃), wrong acid chain and alcohol.
- C: Butanoic acid (CH₃CH₂CH₂COOH), a carboxylic acid, not an ester.
- D: 1-Methoxypropane (CH₃CH₂CH₂OCH₃), an ether, lacks carbonyl group.
Final answer: None of the above
Topic: Naming organic compounds
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