PbSO4 ------> Pb+2 +
So42-
                          Â
s          s
Ksp = [Pb+2][So42-]
6.3x10^-7 Â Â Â Â Â = s*s
s2Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
= 6.7*10-7
s                  Â
= 8.185*10-4 M
[Pb+2]Â Â = 8.18*10-4 M
molarity of PbSO4 = 8.185*10-4 mole/L
= 8.185*10-4mole/L *303.26g/mole
                              Â
= 2482.18g/L
                             Â
= 2482.18g/1000ml
                             Â
= 2.48218g/ml
             Â