A reaction is in zero order kinetics when the reaction rate depends only on enzyme concentration.
Understanding the speeds of chemical reactions is the focus of the physical chemistry field of chemical kinetics, commonly referred to as reaction kinetics. Thermodynamics, in contrast, deals with the direction in which a process happens but does not, by itself, reveal the pace at which it occurs. Chemical kinetics comprises studies of how experimental circumstances affect a chemical reaction's rate and reveal details about the reaction's mechanism and transition phases, as well as the creation of mathematical models that can also characterize a chemical reaction's features.
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