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CAIE A-Level Chemistry AS 18.2.2 Hydrolysis of Esters By Dil Acid and By Dil Questions

Practise CAIE 9701 ester hydrolysis with dilute acid or hot alkali, identifying carboxylic acid or carboxylate and alcohol products.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • with dilute acid and heat, split the ester into a carboxylic acid and an alcohol
  • with dilute alkali and heat, form a carboxylate salt and an alcohol rather than free acid
  • assign each product by tracing the acyl and alkoxy sides of the original –COO– linkage

CAIE A-Level Chemistry AS 18.2.2 Hydrolysis of Esters By Dil Acid and By Dil Questions question 1

[Maximum number: 1]

Compound Q can be hydrolysed by HCl(aq). The two products of this hydrolysis have the same empirical formula.

What could Q be?

A

CH3CO2CH2CH2OH\mathrm{CH}_{3} \mathrm{CO}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{OH}

B

CH3CO2CH2CH2CO2H\mathrm{CH}_{3} \mathrm{CO}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CO}_{2} \mathrm{H}

C

CH3CH2CO2CH2CH2CH3\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CO}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}

D

CH3CH2CH(OH)CH(OH)CH2CH3\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}(\mathrm{OH}) \mathrm{CH}(\mathrm{OH}) \mathrm{CH}_{2} \mathrm{CH}_{3}

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