The solubility of silver chromate is 0.0287 g/1.0 L of solution. What is the K_sp for Ag₂CrO₄?

Question

Quizplus · Accepted Answer

The molar mass of Ag₂CrO₄ is approximately 331.73 g/mol. The molarity of Ag₂CrO₄ is 0.0287 g/L ÷ 331.73 g/mol = 8.65 × 10⁻⁵ M. The dissolution of Ag₂CrO₄ produces 2 Ag⁺ and 1 CrO₄²⁻, so [Ag⁺] = 2 × 8.65 × 10⁻⁵ M and [CrO₄²⁻] = 8.65 × 10⁻⁵ M. Ksp = [Ag⁺]²[CrO₄²⁻] = (2 × 8.65 × 10⁻⁵)² × 8.65 × 10⁻⁵ = 2.6 × 10⁻¹².

The Solubility of Silver Chromate Is 0