Produto de solubilidade (Ksp) & calculadora de precipitação

Como usar (3 passos)

Pick a mode: Ksp → solubility, solubility → Ksp, Q vs Ksp (precipitation test), or simple fractional precipitation.
Enter the salt, stoichiometric coefficients, Ksp or solubility, and concentrations or volumes as needed.
Calcular to see solubility, Ksp, Q vs Ksp, and interval summaries. Copy the URL to share the exact setup.

Default examples use classic salts such as AgCl and CaF2 so that you can see results immediately and compare with textbook values.

Entradas

Choose a mode, adjust the example values, then compute or copy the URL. Units use mol/L and g/L for clarity.

Ksp → solubility Solubility → Ksp Precipitation test (Q vs Ksp) Fractional precipitation (simple)

Salt label

Cation coefficient ν_cation

Anion coefficient ν_anion

Molar mass of salt (g/mol, optional)

Ksp

Common anion [A⁻]₀ (mol/L, optional)

If you enter a common anion concentration (e.g. NaCl already present), the calculator solves the Ksp expression numerically for the new molar solubility.

Resultados

Mode: Ksp → solubility

Como é calculado

Steps will appear here after calculation.

FAQ

Does this tool account for activities and ionic strength?

For simplicity, it treats activities as equal to molar concentrations and does not include activity coefficients or ionic-strength corrections. It is meant for teaching-level Ksp and precipitation exercises, not for precise analytical calculations.

Which salts and stoichiometries can I use?

The core formulas accept general ν_cation and ν_anion coefficients (for example 1:2 salts such as CaF₂), as long as you provide the correct stoichiometric coefficients and Ksp values. For fractional precipitation, the built-in explanation assumes simple 1:1 salts with a shared anion.

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