Calculate the concentration of Ag⁺ in a saturated aqueous solution of Ag₂CrO₄. K_sp for Ag₂CrO₄ is 9.0 × 10^-12. A) 9.0 × 10^-12 B) 2.6 × 10^-4 C) 2.1 × 10^-4 D) 1.3 × 10^-4 E) 6.5 × 10^-5

Question

Quizplus · Accepted Answer

The dissolution of Ag₂CrO₄ can be represented as: Ag₂CrO₄(s) ⇌ 2Ag⁺(aq) + CrO₄²⁻(aq). Let the solubility of Ag₂CrO₄ be 's'. Then, [Ag⁺] = 2s and [CrO₄²⁻] = s. The Ksp expression is Ksp = [Ag⁺]²[CrO₄²⁻] = (2s)²(s) = 4s³. Solving 4s³ = 9.0 × 10⁻¹² gives s = 1.3 × 10⁻⁴ M. Therefore, [Ag⁺] = 2s = 2.6 × 10⁻⁴ M.

Calculate the Concentration of Ag+ in a Saturated Aqueous Solution

Calculate the Concentration of Ag⁺ in a Saturated Aqueous Solution