1) 1.71 mL of 0.030 M KI solution was combined with 5.0 mL of 0.012 M Pb(NO3)2 solution and then diluted to 10.0 mL with KNO3. What was the initial concentration of I- in the solution?
2) 2.33 mL of 0.030 M KI solution was combined with 5.0 mL of 0.012 M Pb(NO3)2 solution and then diluted to 10.0 mL with KNO3. How many mmoles of I- are initially in the solution?
3) Some solid PbI2 is placed in distilled water and allowed to come to equilibrium. The equilibrium concentration of I- was found to be 0.00782 M. What is the equilibrium concentration of Pb2+ in the solution?