CHE 1220 Lecture Notes - Lecture 21: Reaction Rate, Chemical Kinetics, Rate Equation

• School: St. John's University
• Department: Chemistry
• Course: CHE 1220
• Professor: Eranda Maligaspe

Document Summary

Chemical kinetics looks at the speed (or rate) at which chemical reactions occur. Some, such as the rusting of iron, take place very slowly. Others, like the combustion of gasoline, occur very quickly. On a practical level, chemical kinetics is concerned with factors that affect the speeds of reactions and how reaction speeds can be controlled. An experimental rate law can be determined from rate measurements, and this rate law can be used to predict the pathway by which a reaction occurs; that is, its mechanism. We will explore rate mechanisms in kinetics part 2. Use kinetic data to determine reaction orders. Determine the rate constant for a reaction from kinetic data. Factors that affect the rate of chemical reaction: chemical nature of reactants. Some substances are simply more reactive than others: ability of reactants to meet/mix/mingle: Many reactions require that two (rarely more) reactants collide. The better they mix, the more often they collide.