Solubility Product Equilibrium Constant Ionic Solution Salt Ksp

Overview

Engineering reference data for Solubility Product Equilibrium Constant Ionic Solution Salt Ksp in chemistry.

Key Formulas

Ideal Gas Law

$PV = nRT$

Pressure × Volume = moles × gas constant × temperature.

Molarity

$M = \frac{n}{V}$

Moles of solute per liter of solution.

pH

$pH = -\log_{10}[H^+]$

Measure of acidity.

Variables

Sulfide Solubility Product Constants (Kspa)

For sulfides, a modified solubility product constant, Kspa, is defined to account for the reaction with hydrogen ions in acidic solutions. The equilibrium for a generic sulfide M_mS_n is given by:

$M_mS_n(s) + 2H^+(aq) \rightleftharpoons m\ M^{n+}(aq) + n\ H_2S(aq)$

The corresponding solubility product expression is:

$K_{spa} = \frac{[M^{n+}]^m [H_2S]^n}{[H^+]^2}$

This constant is particularly useful for predicting sulfide precipitation in solutions of varying pH.

Solubility Product Constants Data

The table below lists calculated values of the solubility product constant (Ksp) for common ionic compounds at 25°C (77°F). Values are derived from standard thermodynamic data. Kspa values are provided where applicable for sulfides.

References

• Original Source