If 500.0 ml of 4.2 x 10^-3 M Ce(NO3)3 is mixed with 800.0 ml of 5.6x10^-3M NaIO3, will the precipitate Ce(IO3)3 (Ksp = 1.9 x 10^-10) form?

How many grams of solid sodium nitrite should be added to 1.50 L of a 0.0963 M nitrous acid solution to prepare a buffer with a pH of 4.024? ( K₂ (HNO₂) = 4.50 x 10-4) Mass= g

K₂CrO₂(aq) is slowly added to a solution that has [Ba²+] = [Sr²+] = 0.10 M. Calculate the [CrO²-] needed to start the precipitation of: (a) BaCrO4(s) (b) SrCrO₂ (s) Ksp = 1.2 x 10-10 Ksp = 2.2 x 10-5 What is the concentration of the first ion to precipitate when the second ion begins to precipitate? Is complete separation of Ba²+(aq) and Sr²+(aq) by fractional precipitation feasible? Justify your answer. 1. 2. 3.

A 42.00 ml mixture containing 0.0635 M TI* and 0.0635 M Hg+ is titrated with 0.0868 M Nal resulting in the formation of the precipitates TIl and Hg, I,. Calculate pl" at the given points in the titration. The K values for TII and Hg,I, are 5.54 x 10- and 2.9 x 10-, respectively. 43.6 mL pl = 77.2 ml. plD second equivalence point pl" 99.4 ml. pl =