<P> Chemical kinetics is the part of physical chemistry that studies reaction rates . The concepts of chemical kinetics are applied in many disciplines, such as chemical engineering, enzymology and environmental engineering . </P> <P> Consider a typical chemical reaction: </P> <Dl> <Dd> a A + b B → p P + q Q </Dd> </Dl> <Dd> a A + b B → p P + q Q </Dd>

Factors that decrease the rate of a chemical reaction