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Edexcel IGCSE Chemistry 4.42C ester uses

Edexcel IGCSE Chemistry 4.42C ester uses
Edexcel IGCSE Chemistry syllabusChemistry 4CH1First assessment 2019

Practise ester-use questions by stating the smell evidence for ester formation and giving accepted flavouring or perfume uses.

How this is tested

  • State the sweet, fruity or distinctive smell used as evidence that an ester has formed.
  • Give a suitable use of esters, such as food flavourings, perfumes or solvents.

Question 4(c)(iii)

[Maximum number: 1]

This question is about the reactions of ethanol and ethanoic acid.

A student prepares the ester, ethyl ethanoate, by reacting ethanol with ethanoic acid.

This is the student's method.
- mix equal amounts of ethanol and ethanoic acid in a boiling tube
- add a few drops of concentrated sulfuric acid
- place the boiling tube in a hot water bath for several minutes

State how the student would know that ethyl ethanoate has formed.