Chemical reaction (dissociation) of silver chromate in water: Ag₂CrO₄(s) → 2Ag⁺(aq) + CrO₄²⁻(aq).<span>
Ksp(</span>Ag₂CrO₄) = [Ag⁺]²·[CrO₄²⁻].<span>
[</span>CrO₄²⁻] =
x.<span>
[</span>Ag⁺] =
2[CrO₄²⁻] = 2x<span>
Ksp = (2x)</span>² · x = 4x³. Ksp is the solubility product constant <span>for a solid substance dissolving in an aqueous solution.</span> [Ag⁺] is equilibrium concentration of silver cations. [CrO₄²⁻] is equilibrium concentration of chromate anions.