The Ksp for silver sulfate (AgSO4) is 1.2×10^-5. Calculate the solubility of silver sulfate in each of the following

Question

A. Water

B. 0.10M Pb (NO3) 2

C. NaI

Answer 1

First of all, there is no such thing as AgSO4.  You must mean Ag₂SO4

Ag₂SO4 <==> 2Ag⁺ + SO₄^2-

Ksp = 1.2x10^-5 = [Ag⁺]²[SO₄^2-]

In water:

let x = [SO₄^2-] and then [Ag⁺] = 2x

1.2x10^-5 = (2x)²(x) = 4x³

x³ = 3x10^-6

x = 1.44x10^-2 M = solubility in water

For B you will need to know the Ksp for PbSO4 and for C you need to know the Ksp for AgI.