Upon completion of this topic, learners will be able to:

• distinguish between dilute and concentrated solutions.

Concentration of a solution expresses the amount of solute dissolved in a given quantity of solvent or solution. The concentration of a solution can be expressed either qualitatively or quantitatively. The terms dilute and concentrated are used to describe a solution qualitatively. Dilute solutions are those which contain a relatively smaller amount of dissolved solute in the solution.

Concentrated solutions are those which contain a relatively larger amount of dissolved solute in the solution. For example, brine is a concentrated solution of common salt in water.