Chemistry
Solution Dilution Calculator
Apply C₁V₁ = C₂V₂ to find the stock volume and water needed for a diluted solution.
Your inputs
Change any value to update the result instantly.
Stock solution to measure
25 mL
Solvent to add
225 mL
Dilution factor
10 ×
Moles of solute transferred
0.025 mol
Add the stock to the flask first, then make up to the final volume with solvent; do not simply add the stated volume of solvent.
What this calculator does
Applies C1V1 = C2V2 to find the stock volume and solvent needed for a diluted solution.
What your result means
The measured volume of stock which, made up to the final volume, gives the concentration you asked for.
Formula and working
C₁V₁ = C₂V₂
- 1
Collect the inputs
Concentration of the stock (C₁) = 1 mol/L; Concentration wanted (C₂) = 0.1 mol/L; Final volume wanted (V₂) = 250 mL
- 2
Apply the formula
C₁V₁ = C₂V₂
- 3
Result
Stock solution to measure = 25 mL
Frequently asked questions
Symbols and assumptions
- C1, V1
- Concentration and volume of stock
- C2, V2
- Concentration and final volume of the diluted solution
- • The amount of solute is unchanged by dilution.
- • Volumes are additive.
Sources and review
Reviewed 2026-09-22 · Next review 2027-09-22
- • The target concentration cannot exceed the stock concentration. Make up to the mark rather than adding the stated volume of solvent.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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