1. The maximum amount of solid AgBr that will dissolve in 250ml of water is 34.3 µg. Calculate the Ksp for AgBr.
2. A sample of solid CaF2 is placed into a test tube of water and allowed to reach equilibrium. Calculate the equilibrium concentrations of Ca2+ and F-, given the Ksp of CaF2 = 3.9x10^-11.