Volume of activation

{
  "id": "MLC-T-CHM-012615",
  "term": "Volume of activation",
  "field": "Chemistry",
  "definition": "The change in volume that occurs when reactants form the transition state in a chemical reaction. It is derived from the pressure dependence of the reaction rate constant and provides insight into the structural changes during the activation process. A negative volume of activation indicates a more compact transition state compared to the reactants.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "activation",
    "order of reaction",
    "transition state",
    "transition state theory"
  ],
  "references": [
    "PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1175 (https://doi.org/10.1351/pac199466051077)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/volume-of-activation/"
}