How to determine pre-exponential factor for reactions of Benzene with oxygen?
To calculate the pre-exponential factor from the Arrhenius equation see: https://socratic.org/questions/how-do-you-calculate-the-pre-exponential-factor-from-the-arrhenius-equation
The chemical reaction sequence which takes place in the thermal oxidation of benzene is a complicated process. Several intermediate products often appear before the benzene is completely oxidized.
See refferences:
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19790020088.pdf
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19880002393.pdf
http://www.tandfonline.com/doi/pdf/10.1080/00022470.1979.10470861
Linearise the Arrhenius equation using natural logarithm on both sides and intercept of linear equation shoud be equal to ln (A) and take exponential of ln (A) which is equal to your pre-exponential coefficient
If you have a non-linear estimation statistical software you directly calculate the value of A
Go through the document Method How to determine order and activation energy: Kinetics of li...
Hope you get the answer.
From which perspective, experimentalist or theoreticians point of view?
https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemistry_Textbook_Maps/Supplemental_Modules_(Physical_and_Theoretical_Chemistry)/Kinetics/06%3A_Modeling_Reaction_Kinetics/6.02%3A_Temperature_Dependence_of_Reaction_Rates/6.2.03%3A_The_Arrhenius_Law/6.2.3.06%3A_The_Arrhenius_Law_-_Pre-exponential_Factors
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