Solubility Product Calculator
⚖ Acids, Bases & Equilibrium. Use the Solubility product formula to find ksp, [cation], x, [anion], y: pick the value you want, type the others, and the answer updates as you go.
Default: AgCl, [Ag⁺] = [Cl⁻] = 1.33 × 10⁻⁵ M.
Pick the ○ next to the value you want to find, fill in the others, and it solves as you type.
What each letter means
| Quantity | Unit |
|---|---|
| Ksp | no unit |
| [cation] | mol/L |
| x | no unit |
| [anion] | mol/L |
| y | no unit |
Worked example
Find the ksp when [cation] = 1.33 × 10⁻⁵ mol/L, x = 1, [anion] = 1.33 × 10⁻⁵ mol/L, y = 1.
Using Ksp = [X^(y+)]^x[Y^(x-)]^y: Ksp = 1.769 × 10⁻¹⁰.
Frequently asked questions
What is the formula for Solubility product?
Ksp = [X^(y+)]^x[Y^(x-)]^y. Default: AgCl, [Ag⁺] = [Cl⁻] = 1.33 × 10⁻⁵ M.
What do the letters stand for, and what units are used?
Ksp, [cation] in mol/L, x, [anion] in mol/L, y.
How do you calculate ksp?
Put the values into Ksp = [X^(y+)]^x[Y^(x-)]^y. For example, with [cation] = 1.33 × 10⁻⁵ mol/L, x = 1, [anion] = 1.33 × 10⁻⁵ mol/L, y = 1, ksp = 1.769 × 10⁻¹⁰.
Can I solve for a different value?
Yes. In the calculator above, pick the circle next to any value (ksp, [cation], x, [anion], y) and fill in the others: it rearranges the formula for you.
