From each of the following ion concentrations in a solution, predict whether a precipitate will form in the
solution. (Hint: Calculate Q and compare Q to Ksp)
a) [Ba2+] = 0.020 M, [F-
] = 0.015 M Ksp= 1.0

10-6

BaF2(s)  Ba2+(aq) + 2F-
(aq)
b) [Pb2+] = 0.035 M, [Cl-
] = 0.15M Ksp= 1.6

10-5

PbCl2(s)  Pb2+(aq) + 2Cl-
(aq)