Acidity constant

{
  "id": "MLC-T-CHM-000140",
  "term": "Acidity constant",
  "field": "Chemistry",
  "definition": "A specific type of equilibrium constant that quantifies the extent to which an acid dissociates in solution, releasing a proton. It represents the ratio of the concentrations of the dissociated products to the undissociated acid at equilibrium. This value, often denoted as Ka or its negative logarithm pKa, is a fundamental property for characterizing acid strength.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "equilibrium constant",
    "proton"
  ],
  "references": [
    "Orange Book, 2nd ed., p. 13 (https://media.iupac.org/publications/analytical_compendium/)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/acidity-constant/"
}