Chapter 12 Notes

Chapter 12 Notes - CHAPTER 12-Chemical Kinetics 12.1...

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CHAPTER 12-Chemical Kinetics 12.1 Reaction Rates - defined as the change in concentration of a reactant or product per unit time r a t e = [product or reactant] T Instantaneous rate - rate at a particular point in time(slope of the tangent line of a graph where rate is plotted [ ] vs. time S l o p e = Y X = [ product or reactant]/ T -reaction rates change with time(due to [ ]) and is also dependent on the stoichiometry of the reaction. 12.2 Rate Laws: An Introduction rate = k[reactant] n (k = rate constant, n = order) -rate law is an expression which shows how the rate depends solely on the concentrations of the reactants(different rate law) -integrated rate law expresses how the concentrations depend on time. -the use of either one of the two rate laws is dependent on experimental convenience rate laws are important in yielding information about different steps in a reaction thus far, rate = - [reactant] = k[reactant] n T 12.3 Determining the Form of the Rate Law -to understand a given reaction we must first determine its “form” (or figure out the order and rate constant).
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Chapter 12 Notes - CHAPTER 12-Chemical Kinetics 12.1...

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