Common-ion effect

{
  "id": "MLC-T-CHM-002282",
  "term": "Common-ion effect",
  "field": "Chemistry",
  "definition": "The decrease in the solubility of an ionic precipitate or the degree of dissociation of a weak electrolyte when a soluble salt containing a common ion is added to the solution. This effect is a direct consequence of Le Chatelier's principle, shifting the equilibrium to reduce the concentration of the common ion. For example, adding sodium acetate to a solution of acetic acid will suppress the dissociation of the acid.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "cation",
    "dissociation",
    "ionization",
    "mass-law effect",
    "pre-equilibrium",
    "quasi-equilibrium",
    "rate of reaction",
    "solvolysis",
    "substrate"
  ],
  "references": [
    "PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1098 (https://doi.org/10.1351/pac199466051077)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/common-ion-effect/"
}