Kinetic Types of Simple Reactions

Consider a simple reaction far from equilibrium where the back reactions of products yielding reactants can be neglected. In many cases this assumption is not too restrictive because the equilibrium is shifted towards the products to such an extent that the back reaction is insignificant even atJbigh conversions. 

In terms of the above mentioned suggestion the collisions of more than three molecules may be neglected and there will be only three types of simple reactions. Kor non-equilibrium conditions these include 

Reaction (2.3a) is called unimolecular, (2.3b) bimolecular and (2.3 c) termole-cular. This classification was proposed by van t Hoff [499]. 

According to Eq. (1.2) the rate of a simple reaction far from equilibrium can be written as dcs 

In this case, these coefficients coincide with the so-called reaction orders with respect to the species 1. .. n. Often the value 

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