The solubility of calcium sulfate is1.90g of caso4 per liter of aquences solution at 25c. The formula weight of caso4 is 136.11 calculate the solubility product of caso4.

Answer 1

M CaSO4 = mols/L. You have 1 L and mols = grams/molar mass. Solve for M.
Ksp = (Ca^2+)(SO4^2-). Plug in M Ca^2+ and SO4^2- and solve for Ksp.