Titration Calculator
Unknown concentration from a titration, plus the moles and the mass of analyte in the sample.
Results
Molarity
0.094000
mol/L
Amount of substance
0.00235000
mol
Mass
0.141122
g
Concentration
5.64489
g/L
What this tool does
The valence factors are the number of protons or electrons each species exchanges: one for hydrochloric acid and sodium hydroxide, two for sulfuric acid and calcium hydroxide. Leaving them at one when they should be two is the single most common titration error, and it halves or doubles the answer.
Formula
Ca × Va × na = Cb × Vb × nb
Variables
| Symbol | Meaning | Unit |
|---|---|---|
cb | Titrant concentration | mol/L |
vb | Titrant volume used | mL |
va | Sample volume | mL |
nb | Titrant valence factor | — |
na | Sample valence factor | — |
mm | Molar mass | g/mol |
CA | Molarity | mol/L |
NM | Amount of substance | mol |
MS | Mass | g |
GL | Concentration | g/L |
Worked example
- Titrant concentration0.1 mol/L
- Titrant volume used23.5 mL
- Sample volume25 mL
- Titrant valence factor1
- Sample valence factor1
- Molar mass60.052 g/mol
- Molarity0.094000 mol/L
- Amount of substance0.00235000 mol
- Mass0.141122 g
- Concentration5.64489 g/L
Limitations
- For work that must comply with a standard or be signed off, check the result against the applicable code and have it reviewed by a qualified engineer.
- Mixing units is the most common source of error. Convert every input to the units shown next to each field before calculating.