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Diluting a solution
Free for everyone Educational calculationIf you add water to a solution, what happens to its concentration?
- New concentration (C₂)
- mM
- Amount of solute
- mmol
- Decrease
- %
The amount of solute is the same before and after dilution.
Two samples of the same volume; the dots are approximate, the exact figure is above.
After dilution, the sample holds less than one dot.
Equation, source and assumptions
- Equation: C₁ × V₁ = C₂ × V₂
- The amount of solute does not change; only the volume grows.
- Assumptions: ideal dilution, the final volume is the whole solution after adding water, and no reaction takes place.
- Source: OpenStax Chemistry 2e — 3.3 Molarity
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