Modified Arrhenius equation

{
  "id": "MLC-T-CHM-007451",
  "term": "Modified Arrhenius equation",
  "field": "Chemistry",
  "definition": "An empirical equation that extends the basic Arrhenius equation to account for temperature dependence in the pre-exponential factor. It is expressed as k = A T^n exp(-Ea/RT), where 'n' is an additional empirical parameter. This modification provides a better fit to experimental data for some reactions over a wide temperature range.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "Arrhenius equation",
    "pre-exponential factor"
  ],
  "references": [
    "PAC, 1996, 68, 149. 'A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC Recommendations 1996)' on page 174 (https://doi.org/10.1351/pac199668010149)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/modified-arrhenius-equation/"
}