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AQA · GCSE · Combined Science · Higher

Solution concentration calculation

Q02.4 3 marks

A solution of lithium sulfate contains 0.30 g of lithium sulfate in 25 cm3.

Calculate the concentration of lithium sulfate in g/dm3.

Concentration = g/dm3

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Marking points

  1. 1 Convert 25 cm3 to 0.025 dm3.
  2. 2 Use concentration = 0.30 / 0.025.
  3. 3 Give 12 g/dm3.

Full-mark answer

25 cm3 = 0.025 dm3. Concentration = 0.30 / 0.025 = 12 g/dm3.

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