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Which compound is an isomer of ethyl ethanoate? A butyl methanoate B methyl propanoate C methyl butanoate D propanoic acid - AQA - A-Level Chemistry - Question 25 - 2022 - Paper 3
Question 25
Which compound is an isomer of ethyl ethanoate? A butyl methanoate B methyl propanoate C methyl butanoate D propanoic acid
Worked Solution & Example Answer:Which compound is an isomer of ethyl ethanoate? A butyl methanoate B methyl propanoate C methyl butanoate D propanoic acid - AQA - A-Level Chemistry - Question 25 - 2022 - Paper 3
Step 1
Choose the correct isomer of ethyl ethanoate
Answer
To determine the correct isomer, we need to identify the structure of ethyl ethanoate (ethyl acetate), which is represented by the formula C2H5COOCH3. An isomer will have the same molecular formula but a different structural arrangement.
- Option A: Butyl methanoate (C4H8O2) – This has a different molecular formula.
- Option B: Methyl propanoate (C4H8O2) – This is an isomer that matches the molecular formula of ethyl ethanoate, as it has the same number of carbons, hydrogens, and oxygens with a different arrangement.
- Option C: Methyl butanoate (C5H10O2) – This has a different molecular formula.
- Option D: Propanoic acid (C3H6O2) – This also has a different molecular formula.
Thus, the correct answer is B methyl propanoate.