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> Activation energy (by the Arrhenius equation)
Activation energy (by the Arrhenius equation)
Formula
Ea
activation energy for the reaction
k
the rate constant at temperature T
T
the temperature
A
the pre-exponential factor or simply the prefactor
Formula description
The Arrhenius equation gives the dependence of the rate constant k of chemical reactions on the temperature and activation energy.
Calculator (
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k
mole per second
T
kelvin
degree celsius
degree fahrenheit
degree rankine
A
Ea
joule per mole
kilogram square meter per mole per second squared
Precision
0
1
2
3
4
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7
8
9
Formula code
C
C#
C++
Java
JavaScript
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PHP
#include
Ea = -8.314462175*T*log(k/A)
Ea = -8.314462175*T*Math.Log(k/A)
#include
Ea = -8.314462175*T*log(k/A)
Ea = -8.314462175*T*Math.log(k/A)
Ea = -8.314462175*T*Math.log(k/A)
E_a = - R T \ln\left(\frac{k}{A}\right)
$Ea = -8.314462175*$T*log($k/$A)
References
Wikipedia: Activation energy (by the Arrhenius equation).
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