GIA 8-5 K_sp and Ion Concentrations                                                    NAME: ___________

Unit 8: Ch. 18.3                                                                                               

1.      A saturated NaCl solution has a concentration of 5.05 M.  What is its K_sp?

2.      Calcium fluoride is an “insoluble” salt.  If a saturated solution of calcium fluoride has fluoride concentration of 4.28 x 10^-4 M, what is its K_sp?

3.      The “insoluble” salt, BaCO₃, has a K_sp = 8.1 x 10^-9.  What are the concentrations of the ions of a saturated solution of BaCO₃? 

4.      Based on your answer to #3, what is the solubility of BaCO₃ in terms of grams of solute per 100 g of water?  (Assume that the density of the solution equals 1.0 g/mL.)

5.      What are the equilibrium concentrations of the ions in a saturated solution of PbBr₂ which has a K_sp = 4.6 x 10^-6?