Ksp From Concentrations Calculator

Ksp Calculation Formula:

\[ K_{sp} = [A^{m+}]^x \times [B^{n-}]^y \]

Concentration of A^m+:

Coefficient for A^m+:

Concentration of B^n-:

Coefficient for B^n-:

Solubility Product Constant (K_sp):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is the Solubility Product Constant (K_sp)?

The solubility product constant (K_sp) is the equilibrium constant for a solid substance dissolving in an aqueous solution. It represents the level at which a solute dissolves in solution, with higher values indicating greater solubility.

2. How Does the Calculator Work?

The calculator uses the K_sp formula:

\[ K_{sp} = [A^{m+}]^x \times [B^{n-}]^y \]

Where:

\( [A^{m+}] \) — Concentration of the cation (M)
\( x \) — Coefficient of the cation in the balanced equation
\( [B^{n-}] \) — Concentration of the anion (M)
\( y \) — Coefficient of the anion in the balanced equation

Explanation: For a general dissolution reaction: A_xB_y(s) ⇌ xA^m+(aq) + yB^n-(aq), the K_sp equals the product of the ion concentrations raised to their stoichiometric coefficients.

3. Importance of K_sp Calculation

Details: K_sp values are crucial for predicting precipitation reactions, determining solubility limits, and understanding various geological and biological processes involving mineral formation and dissolution.

4. Using the Calculator

Tips: Enter concentrations in molarity (M) and the appropriate stoichiometric coefficients from the balanced dissolution equation. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What does a high K_sp value indicate?
A: A high K_sp value indicates that the compound is highly soluble in water, meaning more of the solid can dissolve before reaching saturation.

Q2: How is K_sp different from solubility?
A: Solubility is the amount of substance that dissolves to form a saturated solution, while K_sp is the equilibrium constant that relates to the ion concentrations at equilibrium.

Q3: Can K_sp be used to compare solubilities of different compounds?
A: Yes, but only for compounds with the same ion ratio. For compounds with different stoichiometries, direct comparison of K_sp values can be misleading.

Q4: What factors affect K_sp values?
A: Temperature is the main factor that affects K_sp values. Most solids become more soluble with increasing temperature, resulting in higher K_sp values.

Q5: How is K_sp used in predicting precipitation?
A: If the ion product exceeds the K_sp value, precipitation will occur until the ion product equals the K_sp. If the ion product is less than K_sp, no precipitation occurs.