Dilution occurs when you decrease the concentration of a solute in a solution, usually simply by mixing with more solvent.
In dilution, the amount of solute remains the same.
Formula to calculate concentration after dilution.
![Calculate Concentration After Dilution.](https://www.learntocalculate.com/wp-content/uploads/2021/01/Dilution.png)
- M is the concentration.
- V is the volume of the solution.
Example:
Calculate the concentration of 0.2 m(aq) Na Cl after it was diluted and its volume increased from 0.5L to 0.75L.
![Calculate Concentration After Dilution.](https://www.learntocalculate.com/wp-content/uploads/2021/01/Dilution-2.png)
Therefore, the concentration of the diluted fluid is 0.133M.