a) pure water → no effect on solubility
b) no common ion → no effect on solubility
c) common ion: SO42- → decrease solubility
Here is the chemical reaction that represents solid lead sulfate dissolving in water:
PbSO4(s) ⇌ Pb2+(aq) + SO42−(aq)
Ksp = 1.8 × 10−8
In which of the following would lead sulfate be least soluble?
a) pure water
b) 1 M KNO3
c) 1 M Na2SO4
In which of the following would lead sulfate be most soluble?
a) 1 M NaNO3
b) 1 M H2SO4
c) 1 M Pb(NO3)2
d) 1 M CuSO4