Concentration

Concentration is the amount of solute per amount of solvent.

There are several ways of expression concentration:

Percent by mass

Parts per million (ppm) and parts per billion (ppb)

Molality (m)

Chemists will need a variety concentrations of solutions for different experiments. However, the stockroom will often only have certain concentrations available.

High concentration chemicals can be diluted with water to the desired concentration.

C₁ = Concentration of the original solution

V₁ = Volume of the original solution

C₂ = Desired concentration of the solution

V₂ = Final Volume of the solution

V₂ - V₁ = Amount of solvent needing to be added.