[PiStOnS1287]

Hello,
I have a quick question for anyone that can help, here is the question:

How many grams of PbI2 can be dissolved in 1000 mL of a 0.100 M KI solution at 25 oC?

I believe that for this problem I will need to use activity coefficients but can anyone tell me how you would set up this probelm?

Thank you so much in advance

[Borek]

Amount of PbI₂ dissolved will be so small it won't change ionic strength. Neglect ions from PbI₂ and calculate ionic strength as if they were not there.