CHM135H1 Lecture Notes - Potassium Chromate
Q6. Fractional Precipitation (Easy)
You are provided with aqueous solution that contains
initially Ba2+ and Sr2+ ions. You are then required to add
aqueous solution of potassium chromate (K2CrO4)
slowly. Given the Ksp of BaCrO4 1.2 x 10-9 M, and Ksp
of SrCrO4 3.5 x 10-5 M. Which of the two solids should
you expect to precipitate first?