Introduction

  The concentration of a solution is the amount of solute in a unit volume of the solution. It is usually in two ways:

1. In g/dm^3

2. In mol/dm^3

Calculation

  From units of concentration, we can find that:

concentration of solution (g/dm^3) = mass of solute (g) / volume of solution (dm^3)

molarity of a solution (mol/dm^3 or M) = number of moles of solute (mol) / volume of solution (dm^3)

Dilution

  Dilution is making solutions less concentrated using water. During the dilution process, the volume of the solution increases, but the number of moles of solute remains unchanged.

  Diluted acids and alkalis are safer than concentrated acids and alkalis. Click to see the dangers of concentrated acids and alkalis.