Stoichiometry is concerned with the relationships between the quantities of reactants and products in chemical reactions. Kinetics is concerned with the rates at which reactions take place. Because stoichiometry quantitatively relates a change in one reactant (product) to the change in another, when the reaction rate of one reactant (product) becomes known, stoichiometry may be used to determine the reaction rate of another in the reaction. In this chapter we will first examine these relationships on a generalized basis. Then we will apply them to the major biochemical events from Chapter 2 and examine the expressions that will be used to model the theoretical performance of biochemical operations in Parts II and IV.
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