The Arrhenius Activation Energy for Two Temperature calculator uses theto compute activation energy based on two temperatures and two reaction rate constants.
INSTRUCTIONS: Choose your preferred units and enter the following:
Activation Energy: The calculator returns the activation energy in Joules per mole.
The, `k = A*e^(-E_a/"RT")`, can be rewritten (as shown below) to show the change from k1 to k2 when a temperature change from T1 to T2 takes place. This equation is used to calculate the activation energy of a reaction when multiple temperatures are involved. The inputs are as follows:
· k1 is the reaction rate constant at temperature 1
· k2 is the reaction rate constant at temperature 2
· Ea is the activation energy in Joules per mole (J/mol)
· R is the ideal gas constant (8.314 J/mol*K)
· T1 is temperature 1 in Kelvin (K)
· T2 is temperature 2 in Kelvin (K)
The calculator converts both temperatures to Kelvin so they cancel out properly.
Whitten, et al. "Chemistry" 10th Edition. Pp. 645