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JAMB Chemistry 1985 Question 31

Question 31

Alkanoic Acids and Esters

The products formed on hydrolysis of CH3COOCH2CH2CH3 (shown) in acid (HCl) is

Diagram for this question
  1. A.CH3COOH + CH3CH2CH2Cl
  2. B.CH3CH2CH2OH + CH3COCl
  3. C.CH3CO–O–H + HOCH2CH2CH3
  4. D.CH3CO–O–H + CH3CH3
  5. E.CH3CH2COOH + CH3CH2OH
Show the answer and explanation

Answer: C (CH3CO–O–H + HOCH2CH2CH3)

Explanation

Acid hydrolysis of an ester gives back the acid and the alcohol it was made from. Propyl ethanoate gives ethanoic acid and propan-1-ol (HOCH2CH2CH3).