Molar Solubility of PbI2 in 0.10 M NaI solution

Here, we use Ksp and the Common Ion Effect to calculate how much lead (II) iodide will dissolve in a solution that already contains 0.1 moles of iodide per litre. We need a simplifying assumption (that 0.1+2x is about the same as 0.1) to make the math simpler. Check me out: http://www.chemistnate.com