##  [Transition State Theory](/transition-state-theory) 

  ##  [Transition State Theory](https://natural.quantumdictionary.io/transition-state-theory-0) 

  

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**Natural & Formal Sciences Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A theory of chemical reaction rates that postulates a quasi-equilibrium between reactants and an activated (transition) state on the potential energy surface, with the rate determined by the flux of activated complexes converting to products.