Diffusion potential

{
  "id": "MLC-T-CHM-003199",
  "term": "Diffusion potential",
  "field": "Chemistry",
  "definition": "A potential difference that arises across a junction between two electrolyte solutions or between two parts of the same solution with different concentrations, due to the differing mobilities of the ions present. Faster-moving ions diffuse ahead of slower ones, creating a charge separation. This potential contributes to the overall electromotive force in electrochemical cells and is typically minimized by using a salt bridge.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "Faraday constant",
    "charge number",
    "diffusion coefficient",
    "dilute solution",
    "gas constant",
    "thermodynamic temperature"
  ],
  "references": [
    "PAC, 1981, 53, 1827. 'Nomenclature for transport phenomena in electrolytic systems' on page 1838 (https://doi.org/10.1351/pac198153101827)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/diffusion-potential/"
}