WAEC Chemistry 2011 Theory — Question 18
Question 18 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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4d(i) Give the reagents required for the following conversions: I. CH2=CH2 to CH2CH2OH; II. CH2CH2OH to CH3COOH; III. CH3COOH to CH3COOCH2CH3.
Model answer
I. H2O and H2SO4 (catalyst) for hydration of ethene to ethanol. II. Acidified KMnO4/K2Cr2O7 (oxidizing agent) to oxidize the alcohol to the acid. III. Concentrated H2SO4 and ethanol (esterification, using excess alcohol and acid catalyst).
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