# Arrhenius equation

(redirected from Arrhenius law)
Also found in: Encyclopedia.

## 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]
Farlex Partner Medical Dictionary © Farlex 2012

## 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.
Medical Dictionary, © 2009 Farlex and Partners

## 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 ?
It can be seen that the temperature dependence of total electrical conductivity obeys the Arrhenius law very well and the total electrical conductivity increases as increasing the temperature.
As the temperature dependence of [DELTA][V.sub.FB] obeys Arrhenius law in certain temperature range, the same should hold for [N.sub.Is].
Lines denote a thermally activated behaviour following an Arrhenius law.
Assuming the Arrhenius law for the temperature dependencies of the decomposition kinetics of V-50, an increase from 50 to 70[degrees]C appears, meaning an increase with a factor of 15.
Known as the Arrhenius Law, it was a fundamental law of chemistry.
The dependence of the rate constant on the temperature is ordinarily described by the Arrhenius law:
The melt polymer was assumed to be a viscous shear-thinning fluid that follows the Arrhenius law.
It is assumed that fluids are incompressible and that the fluids viscosity depends on temperature following an Arrhenius law 4.
This relaxation follows an Arrhenius law for temperatures below 20[degrees]C (activation energy of 47.3 kJ/mol) and was attributed to the local molecular fluctuations.
The relationship between the relaxation time and temperature is generally analyzed by Arrhenius law:
A constant rate of change in properties during ageing is a necessary requirement in the use of the Arrhenius law. Figure 2 illustrates the influence of ageing at 55[degrees]C on tensile strength which also varies during ageing in a linear manner.

Site: Follow: Share:
Open / Close