Arrhenius equation


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Arrhenius equation

[ar′rā·nē·əs i′kwā·zhən]
(physical chemistry)
The relationship that the specific reaction rate constant k equals the frequency factor constant s times exp (-Δ Hact/ RT), where Δ Hactis the heat of activation, R the gas constant, and T the absolute temperature.
References in periodicals archive ?
The temperature dependence of permeation flux may be described by the Arrhenius equation (22).
1]] means reaction rate constant expressed by an Arrhenius equation (2).
A] is determined, the time-temperature profile can be partitioned into segments and cure equivalents can be calculated for each segment using the Arrhenius equation.
The life estimation testing protocol we have developed, refined and regularly utilize is based on the Arrhenius equation which describes first order reactions, such as a chemical reaction.
a] of [gamma] relaxation, characteristic on first scan, calculated with Arrhenius equation, exhibited similar values, being in the interval of 45.
Detection of shelf-lives by using the Arrhenius equation to extrapolate measured cure times correlates with the observed shelf lives.
3]/ PLLA composites on temperature follows the Arrhenius equation and is given by Ref.
Once the activation energy is known, equivalent cure times for a time-temperature profile can be accurately calculated using the Arrhenius equation 9.
where [gamma] is the rate of strain tensor, [eta] is the viscosity of the polymer melt, which may be written with the modified Cross model and the Arrhenius equation, respectively, as below