Solubility Ksp question to determine the maximum Cl– ions required to be added
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Question: 250cm3 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 nCl- in saturated solution:
- Calculate nCl- in AgCl (s) ppt:
Moles of AgCl precipitated out = Ag+ in solution originally – Ag+ in saturated solution
- Calculate total nCl- :
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