Chemistry 9701 · AS & A Level · Atoms, molecules and stoichiometry

Atoms, molecules and stoichiometry — practice question

The Data Booklet is needed for this question. A sample of ethyl propanoate is hydrolysed by heating it under reflux with aqueous sodium hydroxide. The two organic products formed in the hydrolysis are then separated, purified and weighed. As a percentage of the total mass of products collected, what is the mass percentage of each product?

  • A32.4% and 67.6%
  • B38.3% and 61.7%
  • C42.3% and 57.7%
  • D50.0% and 50.0%

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