MCAT Organic Chemistry Question 7: Answer and Explanation
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Question: 7
7. What is the proper structure for 2,3-dihydroxybutanedioic acid (tartaric acid)?
- A.
- B.
- C.
- D.
Correct Answer: B
Explanation:
We know from the IUPAC name that we have a butanedioic acid backbone—in other words, a four-carbon backbone with carboxylic acids at either end. Adding the hydroxyl groups at the 2 and 3 carbons then yields the correct structure.