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The 11 pages that link to Common-ion effect, each with the reason it gives.

• Buffer solutionRelated: It helps explain why a shared ion stabilizes a weak acid–base equilibrium.

• Solubility productRelated: An added common ion shifts dissolution equilibrium and changes the dissolved concentration, though not Ksp at fixed temperature.

• Le Chatelier's principleBroader topic: A textbook special case of the principle applied to solubility equilibria.

• Precipitation reactionRelated: Adding a shared ion can shift dissolution equilibrium toward the precipitated solid.

• Silver chlorideRelated: Adding chloride ions shifts AgCl’s dissolution equilibrium toward the solid.

• Weak acidRelated: A shared conjugate-base ion suppresses weak-acid dissociation.

• Solubility equilibriumRelated: Adding a product ion shifts the balance toward the undissolved solid.

• Qualitative inorganic analysisRelated: Adding a common ion can lower solubility and make group precipitation selective.

• Lead(II) sulfateRelated: Added sulfate or lead ions shift PbSO₄ dissolution toward the solid.

• Weak baseRelated: Adding the conjugate acid can suppress a weak base’s ionization in water.

• Lead(II) chlorideRelated: Adding chloride shifts PbCl₂ dissolution toward the solid.