Molar Solubility from Ksp

Finding molar solubility from Ksp means setting up an ICE table where dissolution produces x mol/L of each ion per its coefficient, substituting the equilibrium row into the Ksp expression, and solving algebraically for x, which equals the molar solubility of the solid itself once found and confirmed reasonable against the salt's generally known dissolution behavior in water.

For AgCl, Ksp = 1.8 × 10⁻¹⁰: [Ag+] = [Cl−] = x, so x² = 1.8 × 10⁻¹⁰, giving x ≈ 1.3 × 10⁻⁵ M as the molar solubility of the solid in pure water at this given fixed temperature.