Titration Calculator Formula

Understand the math behind the titration calculator. Each variable explained with a worked example.

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Formulas Used

Concentration of Analyte

conc_analyte = (conc_titrant * vol_titrant * n_analyte) / (vol_analyte * n_titrant)

Moles of Titrant

moles_titrant = conc_titrant * vol_titrant / 1000

Variables

VariableDescriptionDefault
conc_titrantConcentration of Titrant(M)0.1
vol_titrantVolume of Titrant Used(mL)25
vol_analyteVolume of Analyte(mL)50
n_titrantStoichiometric Coefficient of Titrant1
n_analyteStoichiometric Coefficient of Analyte1

How It Works

How Titration Calculations Work

Formula

C_a = (C_t × V_t × n_a) / (V_a × n_t)

Where:

  • C_a = concentration of analyte
  • C_t = concentration of titrant
  • V_t = volume of titrant at equivalence point
  • V_a = volume of analyte
  • n_a, n_t = stoichiometric coefficients

    • At the equivalence point, moles of titrant and analyte are in stoichiometric ratio.

    Worked Example

    50 mL of unknown HCl is titrated with 0.1 M NaOH; 25 mL NaOH is used to reach equivalence.

    conc_titrant = 0.1vol_titrant = 25vol_analyte = 50n_titrant = 1n_analyte = 1
    1. 01C_a = (C_t × V_t × n_a) / (V_a × n_t)
    2. 02C_a = (0.1 × 25 × 1) / (50 × 1)
    3. 03C_a = 2.5 / 50
    4. 04C_a = 0.05 M

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