Arrhenius plot

An Arrhenius plot displays the logarithm of kinetic constants (${\displaystyle \ln(k)}$, ordinate axis) plotted against inverse temperature (${\displaystyle 1/T}$, abscissa). Arrhenius plots are often used to analyze the effect of temperature on the rates of chemical reactions. For a single rate-limited thermally activated process, an Arrhenius plot gives a straight line, from which the activation energy and the pre-exponential factor can both be determined.

The Arrhenius equation can be given in the form:

or alternatively

The only difference is the energy units: the former form uses energy/mole, which is common in chemistry, while the latter form uses energy directly, which is common in physics. The different units are accounted for in using either the gas constant ${\displaystyle R}$ or the Boltzmann constant ${\displaystyle k_{B}}$.

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