Arrhenius equation derivation I couldn't find the derivation of Arrhenius equation. So, How can we derive the Arrhenius equation: 
$k = A \mathrm e^{-E_\mathrm a/(R T)}$?
The equation is rooted in experimental observations. It is not derivable from any physical formalism, and it is not the best way to describe many reactions. Similar equations can be derived from Transition State Theory. It is important to note that the similarities are limited to the functional form.