WAEC Chemistry 2011 Theory — Question 16
Question 16 of 31 from the West African Examinations Council (WAEC) Chemistry 2011 Theory paper, with the correct answer and a full explanation.
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4b(i) Complete the following equations: I. Ester + H2O (H+, heat) → ...; II. Ester + H2O (NaOH, heat) → ...
Model answer
I. Acid-catalysed hydrolysis of the ester gives the corresponding alcohol and carboxylic acid, e.g. CH3CH2CH2OH + CH3COOH. II. Base-catalysed hydrolysis (saponification) gives the sodium salt of the acid and the alcohol, e.g. CH3CH2CH2CH2COONa + CH3OH.
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