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Which structural formula represents pentan-2-one? A - HSC - SSCE Chemistry - Question 1 - 2019 - Paper 1
Question 1
Which structural formula represents pentan-2-one? A. H H O H H - C - C - C - C - H H H H B. H O H H - C - C - H H H H C. H H H O H ... show full transcript
Worked Solution & Example Answer:Which structural formula represents pentan-2-one? A - HSC - SSCE Chemistry - Question 1 - 2019 - Paper 1
Step 1
Identify the structural formula that represents pentan-2-one
Answer
Pentan-2-one is a five-carbon ketone with a carbonyl group (C=O) on the second carbon. To determine which structural formula corresponds to pentan-2-one, we can examine each option:
- Option A: Places the carbonyl group at the first position, making it not suitable for pentan-2-one.
- Option B: Does not have a carbonyl group on the second carbon.
- Option C: Contains the carbonyl group but not in the correct location, as it appears on the fourth carbon.
- Option D: Correctly places the carbonyl group on the second carbon, making it a valid representation of pentan-2-one.
Thus, the correct answer is D.