In: Chemistry
The solubility of barium carbonate, BaCO3, is 0.0100 g/L. Its molar mass is 197.3 g/mol. What is the Ksp of barium carbonate?
Solubility (s) of BaSO4 = 0.0100 g/ L = 0.0100/197.3 mol/L = 5.0 X 10-5 mol/L
BaSO4 <=======> Ba2+ + SO42-
Solubility (s): s mol/L s mol/L s mol/L
Solubility product for this reaction: Ksp = [ Ba2+] X [SO42-]
or, Ksp = [s][s]
Ksp = s2
Ksp = [5 X 10-5]2
Ksp = 2.5 X 10-9