Arrhenius equation

Gives the rate constant of a chemical reaction as an exponential function of absolute temperature and activation energy. It is used to estimate how strongly reaction rates change with temperature.

k=A e^{-E_a/(RT)}

What the symbols mean

rate constant of the reaction (units depend on reaction order)
pre-exponential factor, frequency factor (same units as k)
activation energy (\mathrm{J\,mol^{-1}})
molar gas constant (\mathrm{J\,mol^{-1}\,K^{-1}})
absolute temperature (\mathrm{K})

About this formula

  • FieldChemistry
  • TopicChemical kinetics
  • LevelUniversity
  • Also calledArrhenius function, reaction rate temperature dependence, rate constant temperature dependence, temperature dependence of reaction rate, Arrhenius rate law, activation energy equation
  • SourceWikidata Q507505

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