Collision Theory

We assume that particles must collide in order to react. Thus a first understanding of reaction rates is based on understanding what influences the frequency of collisions.

 

 

r = p (e-(Ea/RT)) Zo[A][B]

r = k [A][B]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Plot of Maxwell-Boltzman Distribution of oxygen at three different temperatures

 

 

 

 

 

 

 

 

 

 

 

 

 

Arrhenius Equation & Plot

ln k = (-Ea/R) (1/T) + ln A

Arrhenius plot

public domain image via Wikipedia Creative Commons

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Transition States and Reaction Progress (Reaction Coordinate) Diagrams

Reaction with -G:

 

 

 

 

 

 

 

 

 

 

 

 

 

Reaction with +DeltaG:

 

 

© R A Paselk

Last modified 20 April 2011