Point of zero charge

{
  "id": "MLC-T-CHM-009063",
  "term": "Point of zero charge",
  "field": "Chemistry",
  "definition": "The condition at which the net surface charge density of a solid particle in contact with an electrolyte solution is zero. At this point, the surface possesses an equal number of positive and negative charge sites, resulting in no net electrical charge. This parameter, often expressed as a pH value for aqueous systems, is determined experimentally through methods like potentiometric titration or electrokinetic measurements.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "surface charge density"
  ],
  "references": [
    "PAC, 1991, 63, 895. 'Nomenclature, symbols, definitions and measurements for electrified interfaces in aqueous dispersions of solids (Recommendations 1991)' on page 902 (https://doi.org/10.1351/pac199163060895)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/point-of-zero-charge/"
}