Elements of
Chemical Reaction Engineering
6th Edition



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Essentials of
Chemical Reaction Engineering
Second Edition

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Chapter 9: Reaction Mechanisms, Pathways, Bioreactions and Bioreactors

Derive: Pseudo Steady State Hypothesis (PSSH):

Given that for reaction (3):

All specific reaction rates are defined with respect to

Assume that all reactions are elementary reactions, such that:

   
   
   

The net reaction rate for is the sum of the individual reaction rates for :

   
   
   

The PSSH assumes that the net rate of is zero:
   
   
   
   


Back to Chapter 9