End-point error

{
  "id": "MLC-T-CHM-003911",
  "term": "End-point error",
  "field": "Chemistry",
  "definition": "The difference between the observed end point of a titration and the true equivalence point. This error arises from the indicator changing color slightly before or after the stoichiometric reaction is complete. Minimizing end-point error is achieved by selecting an indicator with a pKa close to the pH at the equivalence point.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "equivalence-point"
  ],
  "references": [
    "PAC, 2025, 97, 137. 'Glossary of terms for mass and volume in analytical chemistry (IUPAC Recommendations 2024)' on page 3 (https://doi.org/10.1515/pac-2023-0903)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/end-point-error/"
}