MCAT Organic Chemistry Question 5: Answer and Explanation
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Question: 5
5. The IUPAC name for the following structure ends in what suffix?
- A. –ol
- B. –one
- C. –oic acid
- D. –yne
Correct Answer: C
Explanation:
Among the functional groups presented, carboxylic acids have the highest priority, and their compounds end with an –oic acid suffix. Choice (A) denotes an alcohol, choice (B) a ketone, and choice (D) an alkyne, all of which have lower priorities than carboxylic acids. The MCAT does not test nomenclature of halides or ethers, but note that these must have lower priority than a carboxylic acid because they are less oxidized groups.