Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
Definition
Dilution is the process of reducing the concentration of a solute in a solution, usually by mixing with more solvent. It is often used to achieve desired molarity for experiments.
5 Must Know Facts For Your Next Test
Dilution formula: $M_1V_1 = M_2V_2$, where $M$ is molarity and $V$ is volume.
Adding solvent to a solution decreases the molarity but keeps the number of moles of solute constant.
To perform a dilution, you need to know the initial concentration and volume, and the final concentration or volume required.
Serial dilutions involve multiple step-wise dilutions to achieve very low concentrations.
Proper mixing is essential to ensure uniform distribution of solute after dilution.