Arrhenius equation


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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 ?
In particular, Ea values were obtained through the Arrhenius equation and were calculated to be 117.
The correlation between reaction rate constants and activation energy can be obtained using Arrhenius equation.
The apparent activation energy of the EN reaction calculated according to the Arrhenius equation was approximately 38.
Knowledge of the Arrhenius equation parameters is a key for correct mathematical model composition and also for safe and successful control.
Through application of the Arrhenius equation, the release rates of test materials at ambient temperatures in the field can be estimated in a much shorter time by carrying out release studies at elevated temperatures.
Using the Arrhenius equations of deterioration, it was found that the deterioration rate of paper kept at 50[degrees]F (10[degrees]C) and 30% RH or slightly elevated to 60[degrees]F (15[degrees]C) and 40% RH was insignificant for most paper materials when compared to environments in unconditioned storage vaults in basements and attic spaces.
A value of activation energy for the corrosion reaction of zinc in the presence and absence of different concentration of Azardirachta indica leaves extract has been calculated using Arrhenius Equation (Equation 6)
The Arrhenius equation (Equation 5) was used to investigate the effect of temperature (T) on the rate of corrosion (CR) of mild steel in the presence and absence of penicillin V potassium (Emregul et al.
Diffusion is known to be an activated process (Skaar 1988) and varies with temperature in accordance with the Arrhenius equation,
The parameter estimates obtained as a function of temperature are plotted according to the Arrhenius equation in Figure 16 from which an apparent activation energy [E.
To study the stability at -80[degrees]C, we used an accelerated stability testing protocol based on the principle of the Arrhenius equation (8), which describes a linear relationship between the logarithm of the reaction rate constant (e.