Calculate the K_sp for silver sulfate if the solubility of Ag₂SO₄ in pure water is 4.5 g/L. A)3.0 × 10^-6 B)1.2 × 10^-5 C)2.1 × 10^-4 D)4.2 × 10^-4

Question

Quizplus · Accepted Answer

Using the solubility product expression of Ag2SO4: 
Ksp = [Ag+]2[SO42-] 
Assuming that all the Ag2SO4 dissolves completely: 
4.5 g/L = [Ag+]2[SO42-]
Since Ag2SO4 dissociates into 2 Ag+ and 1 SO42-: 
[Ag+] = 2[S] 
Substituting: 
4.5 g/L = (2[S])2(S) 
4.5 g/L = 4S3 
S = (4.5/4)1/3 = 0.515 M 
Therefore, 
Ksp = (2[0.515])2(0.515) = 1.2 × 10-5

Calculate the Ksp for Silver Sulfate If the Solubility of Ag2SO4

Calculate the K_sp for Silver Sulfate If the Solubility of Ag₂SO₄