Dilution Calculator (C1V1 = C2V2)
Works out how to dilute a stock solution. Choose what to find; the field for that value is ignored.
Answer
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Stock solution —
Solvent to add —
Dilution factor — times
Reading this —
The formula
C₁ × V₁ = C₂ × V₂
The amount of solute does not change on dilution, only the volume it is spread through.
What to watch out for
Measure the stock, then make up to the final volume with solvent.
Frequently Asked Questions
How do I make 100 mL of 0.5 mol/L from 2 mol/L stock?
Take 25 mL of stock and add solvent up to 100 mL.
Does the concentration unit matter?
No, as long as it is the same on both sides. The same applies to the volumes.