Unit 7.12: Common-Ion Effect
Evaluate a system to determine if a common ion will impact the
solubility of a salt.
- Will adding NaCl affect the solubility of AgCl? Explain why.
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Predict the solubility change of a salt in the presence of a common
ion.
Use Le Châtelier’s principle to discuss this impact qualitatively.
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How does the presence of a common ion shift equilibrium according to
Le Châtelier’s principle?
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Explain why solubility decreases when a common ion is added to the
solution.
Use Ksp expressions to calculate this impact quantitatively.
- Calculate the solubility of AgCl in a 0.010 M NaCl solution.
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Use Ksp to determine the new solubility of CaF2 with added Ca2+ ions.