We’re being asked to determine the activation barrier (activation energy, Ea) of a reaction given the rate constant and frequency factor.
We can use the two-point form of the Arrhenius Equation to calculate activation energy:
k = rate constant
Ea = activation energy (in J/mol)
R = gas constant (8.314 J/mol • K)
T = temperature (in K)
A = Arrhenius constant or frequency factor
The rate constant of a reaction at 32°C is 0.055/s. If the frequency factor is 1.2 x 1013/s, what is the activation barrier?
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