Pb(NO3)2 molarity in the mixture =
molarity of Pb(NO3)2/ total volume
                                                    Â
= 1.0 x 10^-4 / (10 +10)
                                                    Â
= 5 x 10^-6 M
[ Pb+2 ] molarity = 5 x 10^-6 M
KI molarity in the mixture = 1.0 x 10^-3 / (10 + 10)
                                        Â
= 5 x 10^-5 M
[I-] molarity = 5 x 10^-5 M
Q = ionic product = [Pb+2][I-]^2
                          Â
= 5 x 10^-6 x (5 x 10^-5)^2
                           Â
= 1.25 x 10^-14
Ksp of PbI2 = 7.1 x 10-9
here Ksp > Q (ionic product). so precipitate will not
form.
