MCAT Organic Chemistry Question 120: Answer and Explanation

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Question: 120

15. The reaction of ammonia with caprylic acid (octanoic acid), found in coconuts, would produce a(n):

  • A. ester.
  • B. anhydride.
  • C. alcohol.
  • D. water molecule.

Correct Answer: D

Explanation:

The reaction between a carboxylic acid and ammonia (NH3) would produce an amide—which is not one of the options listed. Instead, we should take a look at the type of reaction occurring. The production of an amide from a carboxylic acid and ammonia occurs through a condensation reaction in which a molecule of water is removed as a leaving group.

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