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Edexcel A-Level Chemistry A2 15.11 Carboxylic Acids Can Be Prepared By the Oxidation of Alcohols or Aldehydes and the Hydrolysis of Nitriles Questions

Choose the route from the functional group: hydrolyse a nitrile with aqueous acid under reflux, or oxidise a primary alcohol or aldehyde to the acid.

Syllabus
First assessment 2019
Course
Chemistry YCH11
Level
A2

Exam points

  • State hydrolysis, aqueous acid and reflux to convert a nitrile or cyanohydrin into a carboxylic acid.
  • Write a balanced equation for acid hydrolysis of a nitrile, including water, hydrogen ions and the ammonium product.

Edexcel A-Level Chemistry A2 15.11 Carboxylic Acids Can Be Prepared By the Oxidation of Alcohols or Aldehydes and the Hydrolysis of Nitriles Questions question 1

[Maximum number: 1]

This question concerns six isomers each with the molecular formula C5H10O2\mathrm{C}_{5} \mathrm{H}_{10} \mathrm{O}_{2}.

Isomer F is a neutral compound that smells of pears.

It can be formed by the reaction between compounds V and W in the presence of concentrated sulfuric acid.

Compound V has an absorption in its infrared spectrum at 1720 cm−11720 \mathrm{~cm}^{-1} and a broad absorption around 3050 cm−13050 \mathrm{~cm}^{-1}.

Compound W can be formed directly from propanal.

State the conditions required and the reagent needed to form compound W from propanal.
(1)

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