The pH for a 2.6 mol/L propanoic acid solution was 2.24. What is the Ka of propanoic acid, given that propanoic acid is a monoprotic weak acid and does not dissociate readily?
The Ksp for magnesium fluoride is 3.7 x 10-8. The equilibrium is: MgF2(s) ? Mg2+ + 2F-. Calculate the solubility of magnesium fluoride in mol/L.