Posted by Mousa on .
The osmotic pressure (T=25°C) of a saturated solution of CaC03 is 0.0179 atm. Determine the solubility product of the salt

Chemistry 
DrBob222,
pi = MRT
You know pi, R, T, solve for M = mols/L
CaCO3 ==> Ca^2+ + CO3^2
Ksp = (Ca^2+)(CO3^2)
Substitute into Ksp expression and solve for Ksp. This answer doesn't agree with the tabular value in my text.