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CAIE A-Level Chemistry AS 19.2.3 Hydrolysis of Nitriles with Dil Acid or Dil Questions

Practise CAIE 9701 hydrolysis of nitriles with dilute acid or alkali, retaining the nitrile carbon and balancing the carboxylic acid or carboxylate products.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • with dilute aqueous acid and heat, form the carboxylic acid and an ammonium salt
  • with dilute alkali and heat, form the carboxylate and NH3 before acidifying to –COOH
  • retain the nitrile carbon as the carboxyl carbon and balance water and acid or alkali in equations

CAIE A-Level Chemistry AS 19.2.3 Hydrolysis of Nitriles with Dil Acid or Dil Questions question 1

[Maximum number: 1]

The product of the reaction between propanone and hydrogen cyanide is hydrolysed under acidic conditions.

What is the formula of the final product?

A

CH3CH(OH)COOH\mathrm{CH}_{3} \mathrm{CH}(\mathrm{OH}) \mathrm{COOH}

B

CH3CH2CH2COOH\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{COOH}

C

(CH3)2CHCONH2\left(\mathrm{CH}_{3}\right)_{2} \mathrm{CHCONH}_{2}

D

(CH3)2C(OH)COOH\left(\mathrm{CH}_{3}\right)_{2} \mathrm{C}(\mathrm{OH}) \mathrm{COOH}

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