Disguised Chemical Selectivity in Competitive Parallel Reactions

9 Disguised Chemical Selectivity in Competitive Parallel Reactions 

It is important to know what kind of reactions may suffer from the 

Disguised chemical selectivity of competitive parallel reactions caused by slower mixing has been discussed by Rys based on the eddy model as follows  

If the reaction of A with B is faster than that with C, then in the first time interval more of the product PI will be formed in the boundary zone of the eddy. At a later point in time an A molecule must, in order to react with another B molecule, penetrate a zone that has become enriched in the compound C which is less reactive than B. For this reason the reactivity of C appears at this time to be greater than predicted from the selectivity 1/ 2- In the extreme case of a mixing-controlled reaction the measured product distribution becomes 1 1. In this case the selectivity ki/k2 loses its influence. 

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