: The solution is at equilibrium (saturated); precipitation is just about to begin. If

[Ag+](0.10)=5.0×10-13open bracket cap A g raised to the positive power close bracket open paren 0.10 close paren equals 5.0 cross 10 to the negative 13 power

). By carefully controlling the concentration of the precipitating agent, you can crash one ion out of the solution while keeping the others dissolved. 1. The Core Principle: Kspcap K sub s p end-sub

Most POGIL problems assume the added reagent is so concentrated that the total volume of the solution doesn't change significantly.