What is the maximum concentration of Ag⁺ that can be added to a 0.00300 M solution of Na₂CO₃ before a precipitate will form? (Ksp for Ag₂CO₃ is 8.10 × 10⁻¹²)

Answer 1

Ag₂CO₃(s) <==> 2Ag⁺(aq) + CO₃^2-(aq)

Ksp = 8.10x10^-12 = [Ag⁺]²[CO₃^2-]

8.10x10^-12 = (x)²(0.00300)

x² = 2.43x10^-12

x = [Ag⁺] = 1.56x10^-7 M