Question

What will happen if 50mL of 0.022M Na2S2O3, 50mL of 0.010M AgNO3, and 50mL of 0.097M KCl are mixed together? For AgCl, ksp=1.8x10^-10 ; for Ag(S2O3)2^3-, Kf= 2.9 x 10^13.

Answer 1

I would suggest you go about it this way.
First, you know Cl from KCl concn. Using Ksp for AgCl, and the KCl concentration, calculate (Ag^+) needed to ppt AgCl.
Then using Kf for Ag(S2O3)^3-, calculate the Ag^+ in that solution. Compare that with Ag^+ from the Ksp. Post your work if you get stuck.

Answer 2

precipitate will form