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JAMB Chemistry 2005 Question 15

Question 15

Alkanoic Acids and Esters

In the purification of impure samples of ethyl ethanoate synthesized by esterification, concentrated sodium trioxocarbonate (IV) solution is used to remove

  1. A.water
  2. B.basic impurities
  3. C.acidic impurities
  4. D.ethoxyethane
Show the answer and explanation

Answer: C (acidic impurities)

Explanation

Na2CO3 is basic, so it neutralises leftover ethanoic acid and the acid catalyst, removing acidic impurities.