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Protonation constant

Term · Chemistry · MLC-T-CHM-009615

An equilibrium constant that quantifies the affinity of a chemical species for a proton in solution. It describes the equilibrium between a base and its conjugate acid, reflecting the strength of the base. The value is expressed as log K and is dependent on temperature and ionic strength.

Table 1. Record
IdentifierMLC-T-CHM-009615
FieldChemistry
SubjectAnalytical Chemistry
ReferencesOrange Book, 2nd ed., p. 13 (https://media.iupac.org/publications/analytical_compendium/)
See alsoEquilibrium constant; Proton
Record as JSON
{
  "id": "MLC-T-CHM-009615",
  "term": "Protonation constant",
  "field": "Chemistry",
  "definition": "An equilibrium constant that quantifies the affinity of a chemical species for a proton in solution. It describes the equilibrium between a base and its conjugate acid, reflecting the strength of the base. The value is expressed as log K and is dependent on temperature and ionic 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/protonation-constant/"
}

Record 10,215 of 13,676 in Chemistry terminology (MLC-0109). Request the full dataset.