## Solubility K_{sp} question to determine the maximum Cl^{–} ions required to be added

**Contributed by: Admin**

Question: 250cm^{3} of solution containing 0.05 moldm^{-3} of Ag^{+} (aq) and 0.04 moldm^{-3} of Cu^{+ }(aq). NaCl is added into the solution to precipitate AgCl while keeping Cu^{+} in the solution. What is the maximum amount of AgCl I can add?

Max moles of Cl^{–}_{ }= Cl^{–}in AgCl (s) + Cl^{–}in saturated solution

- Calculate n
_{Cl-}in saturated solution:

- Calculate n
_{Cl-}in AgCl (s) ppt:

During saturation,

Moles of AgCl precipitated out = Ag^{+}in solution originally – Ag^{+}in saturated solution

** **

- Calculate total n
_{Cl- }:

*This set of notes is licensed under a** Creative Commons license: *

*Attribution-NonCommercial-ShareAlike 4.0 International License (CC BY-NC-SA 4.0).*