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In a bimolecular reaction the steric factor p was experimentally determined to be 4.5 Experimentally determined value of frequency factor is higher than that predicted by Arrhenius equation

According to arrhenius theory $$k=Ae^{-E_A/RT}$$
According to collision theory

$$k=pZ_{AB}e^{-E_{A}/{RT}}$$

In the arrhenius equation the frequency factor is $A$ and in the Trautz-Lewis theory it is $Z_{AB}$ . Now $p=4.5$ and since on comparing both the equations we get $$A=pZ_{AB}$$ This means the experimental value, of collision frequency $Z_{AB}$ is in fact lower than $A$ $\left(Z_{AB}=\frac p {4.5}\right)$.

This contradicts the above statement?

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closed as unclear what you're asking by Todd Minehardt, A.K., Jon Custer, Tyberius, Karsten Theis May 14 at 15:14

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