Chemistry 5070 · O Level · Formulae, functional groups and terminology

Formulae, functional groups and terminology — practice question

An ester is produced when a carboxylic acid reacts with an alcohol. In what way does the number of carbon, hydrogen and oxygen atoms in an ester compare with the combined total of these atoms in the carboxylic acid and alcohol used to make it?

  • ACarbon atoms: fewer; hydrogen atoms: fewer; oxygen atoms: fewer.
  • BCarbon atoms: fewer; hydrogen atoms: same; oxygen atoms: fewer.
  • CCarbon atoms: same; hydrogen atoms: fewer; oxygen atoms: fewer.
  • DCarbon atoms: same; hydrogen atoms: same; oxygen atoms: same.

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