# Arrhenius equation

(redirected from Arrhenius' law)
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## Ar·rhe·ni·us e·qua·tion

(ă-rē'nē-ŭs),
an equation relating chemical reaction rate (k) to the absolute temperature (T) by the equation: d(ln k)/dT) = ΔEa/RT2 where Ea is the activation energy and R is the universal gas constant.
[Svante Arrhenius]

## Arrhenius equation

(ă-rā′nē-us)
[Svante Arrhenius, Swedish chemist and Nobel laureate, 1859–1927]
A mathematical formula that specifies the influence of temperature on the rate of a chemical reaction. In general, a higher temperature produces a faster reaction. The equation is used in industry and pharmacy to predict shelf life of reagents and pharmaceuticals.

## Arrhenius,

Svante, Swedish chemist and Nobel laureate, 1859-1927.
Arrhenius doctrine - the theory of electrolytic dissociation that became the basis of modern understanding of electrolytes. Synonym(s): Arrhenius law
Arrhenius equation - an equation relating chemical reaction rate to the absolute temperature.
Arrhenius law - Synonym(s): Arrhenius doctrine
Arrhenius-Madsen theory - that the reaction of an antigen with its antibody is a reversible reaction.
References in periodicals archive ?
The temperature dependency of the relaxation time was analyzed by using Arrhenius' law. While the relaxation time of 6% Mn[Cl.sub.2]-filled sample increased nearly 10% with increasing temperature, the relaxation times of the rest of the samples decreased approximately between 1% and 8%.
n 0.38 Zero shear rate viscosity [[eta].sub.0]] [Pa.s] 26470.0 Arrhenius' law param.
The constitutive equation and its temperature dependency are assumed to be represented by the Carreau model and Arrhenius' law,
where D is the rate deformation tensor, [[eta].sub.0] the zero shear rate viscosity, [[pi].sub.D] the second invariant of the rate deformation tensor, [[lambda].sub.c] and n the Carreau model's parameters, [beta] the Arrhenius' law's parameter, and [T.sub.[alpha]] the reference temperature, respectively.

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