MCAT Organic Chemistry Question 14: Answer and Explanation

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Question: 14

14. Which of the following are common names for carboxylic acid derivatives?

I. Acetic anhydride

II. Formic acid

III. Methyl formate

  • A. I and II only
  • B. I and III only
  • C. II and III only
  • D. I, II, and III

Correct Answer: B

Explanation:

Acetic anhydride is the common name for ethanoic anhydride. Methyl formate is the common name for methyl methanoate; we can infer this from the common root form– and the ester suffix –oate (which is sometimes shortened to –ate for pronunciation purposes). Formic acid is the common name for methanoic acid, but this is a carboxylic acid—not a derivative.

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