If calcium sulfate and barium sulfate do not form mixed crystals(i.e. they only form 1:1 species), what is the maximum fraction ofthe barium ion that can be precipitated as the sulfate from asolution that is initially 0.080 M in Ba2+ and 0.100 M in Ca2+,before the precipitation of calcium sulfate starts? For BaSO4, Ksp= 1.1 x 10-10, for CaSO4, Ksp = 2.4 x 10-5
