AP Chemistry· difficulty 4/5
Which best explains the curve?
Adding Cl- lowers Ksp
Adding Cl- raises Ksp
Adding Cl- has no effect
Common-ion effect: added Cl- shifts AgCl(s) <-> Ag+ + Cl- left
Explanation
Increasing the concentration of common ion Cl- shifts equilibrium toward solid AgCl, decreasing solubility. Ksp itself is unchanged at constant T.
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