Solubility Product Calculator Formula
Understand the math behind the solubility product calculator. Each variable explained with a worked example.
Formulas Used
Ksp
ksp = pow(cation_coeff * solubility, cation_coeff) * pow(anion_coeff * solubility, anion_coeff)Variables
| Variable | Description | Default |
|---|---|---|
solubility | Molar Solubility(M) | 0.001 |
cation_coeff | Cation Coefficient | 1 |
anion_coeff | Anion Coefficient | 2 |
How It Works
How to Calculate Ksp
Formula
For A_mB_n dissolving: Ksp = (m×s)^m × (n×s)^n
Where s is the molar solubility, m and n are stoichiometric coefficients.
Worked Example
CaF2 molar solubility = 0.001 M (1 Ca2+, 2 F-).
solubility = 0.001cation_coeff = 1anion_coeff = 2
- 01[Ca2+] = 1 × 0.001 = 0.001
- 02[F-] = 2 × 0.001 = 0.002
- 03Ksp = (0.001)^1 × (0.002)^2
- 04Ksp = 4 × 10^-9
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