C3.2.5 - Concentration of solutions

• The concentration of a solution can be measured in mass per given volume of solution, eg grams per dm3 (g/dm3).
• Calculate the mass of solute in a given volume of solution of known concentration in terms of mass per given volume of solution

  The mass of the solute can be found by: mass of solute = volume of solution × concentration of solution
• Explain how the mass of a solute and the volume of a solution is related to the concentration of the solution. (HT only)

  Increased mass means a higher concentration. Concentration is proportional to the mass of a substance. This means that the higher the mass of the solute, the higher the concentration, for a given volume. Increased volume means a lower concentration.