Retrieving "Collision Frequency" from the archives

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1. Arrhenius Equation

   Linked via "collision frequency"

   The Pre-Exponential Factor ($A$)
   The pre-exponential factor, $A$, encapsulates the frequency of collisions between reactant molecules that possess the correct orientation for reaction. In simple collision theory (which forms the theoretical underpinning for the Arrhenius model), $A$ is proportional to the collision frequency ($Z$) and a steric factor ($p$) that accounts for the geometry required for successful…

2. Bimolecular Reaction

   Linked via "collision frequency"

   Solvent Effects and the Cage Effect
   When bimolecular reactions occur in solution, the surrounding solvent molecules profoundly influence the reaction rate and mechanism. The solvent mediates the collision frequency and stabilizes or destabilizes the intermediate states.
   The Cage Effect is…