Equivalent reaction of a linear subset in local pseudo-steady state mode

Equivalent reaction of a linear subset in local pseudo-steady state mode 

We will establish a result of a veiy great utihty, which expresses the relation reactivity-concentrations for steps that we are not sure are elementary. 

Consider a subset of a linear mechanism from step i to step j such that they are all held in the same reaction zone (thus, the space function is the same for all these steps). Moreover, these steps show the following characteristics  

Considering the total reaction [7.Et.dR], sum of these steps (which ehminates the intermediate species), we assume that here all the multiplying coefficients are identical  

To simplify, we have selected all stoichiometric numbers equal to 1 which does not restrict the general information of om reasoning. 

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