Reactor type and backmixing

When more than one reaction can occur, the extent of any backmixing of products with reactants is one of the most important factors in determining the yield 

If two reactants are involved in a reaction, high concentrations of both, at least initially, may be obtained in a batch or tubular plug-flow reactor, and low concentrations of both in a single continuous stirred-tank reactor. In some circumstances, however, a high concentration of reactant A coupled with a low concentration of reactant B may be desirable. This may be achieved in a number of ways  

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