How to use the unknown concentration by titration calculator
Find the concentration of an unknown solution from a titration with a standard titrant. Enter titrant concentration, titrant volume at endpoint, unknown sample volume, analyte moles per titrant mole in the fields above; the unknown concentration, moles of analyte in sample are computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “titration unknown concentration”, “titre calculation”, “analyte concentration”, “calculate unknown concentration by titration”, “find unknown concentration”.
Formula
Variables
- Ct — Titrant concentration (M)
- Vt — Titrant volume at endpoint (mL)
- Vu — Unknown sample volume (mL)
- r — Analyte moles per titrant mole
Worked example
With titrant concentration = 0.1 M, titrant volume at endpoint = 23.5 mL, unknown sample volume = 25 mL, analyte moles per titrant mole = 1, the calculator gives unknown concentration ≈ 0.094 M; moles of analyte in sample ≈ 2.35 mmol.
Frequently asked questions
What is the unknown concentration by titration calculator used for?
Find the concentration of an unknown solution from a titration with a standard titrant. It helps with questions such as “titration unknown concentration”, “titre calculation”, “analyte concentration”.
What is the formula for the unknown concentration by titration calculation?
Unknown concentration (M) = Ct × Vt × r / Vu. Moles of analyte in sample (mmol) = Ct × Vt × r. Here Ct is titrant concentration (M), Vt is titrant volume at endpoint (mL), Vu is unknown sample volume (mL), r is analyte moles per titrant mole.
What inputs do I need for the unknown concentration by titration calculator?
You need titrant concentration in M, titrant volume at endpoint in mL, unknown sample volume in mL, analyte moles per titrant mole. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the unknown concentration by titration calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the unknown concentration by titration result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.