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Unformatted text preview: CHAPTER 13 LEARNING OBJECTIVES To satisfy the minimum requirements for this course, you should be able to: Understand the concept of reaction rates and be able to Use a table of concentration versus time data to calculate an average rate of reaction over a period of time. Use the coefficients of a balanced reaction to express the rate of reaction in terms of the change in concentration of a reactant or product with time. Determine instantaneous rates from a graph of reactant or product concentration as a function of time. Determine the rate law from initial rate data and be able to determine: the order of reaction with respect to each reactant, the overall order of reaction, the rate constant with units, and the initial rate for any other set of initial concentrations. Recognize the integrated rate laws and be able to Use integrated first- and second-order rate laws to find the value of one variable, given values of the other variables. Explain the concept of reaction half-life and describe the relationship between half-life and rate constant for first-order reactions. determine the order of the reaction from plots of concentration versus time, ln concentration versus time, and 1/concentration versus time estimate the half-life of a first- or second-order reaction from a plot of concentration versus time. Use the collision model of chemical reactions to explain how reactions occur at the molecular level, and Explain the concept of activation energy and how it relates to the variation of reaction rate with temperature. Solve the Arrhenius equation and determine the activation energy from the slope of the Arrhenius plot (ln k versus 1/T). Understand the relationship between a reaction mechanism, and its rate law and Given a reaction mechanism, identify the reaction intermediates and catalysts, write the overall reaction, and determine the molecularity of each step. Derive a rate law for a reaction that has a rate-determining step, given the elementary steps and their relative speeds Choose a plausible mechanism for a reaction given the rate law. Define a catalyst and be able to Describe the effect of a catalyst on the energy requirements for a reaction explain the differences between homogeneous and heterogeneous catalysts. Sketch a potential energy profile showing the activation energies for the forward and reverse reactions and show how they are affected by the addition of a catalyst. Explain how enzymes act as biological catalysts using the induced fit model. To learn the material in this chapter, you should: Review the In Closing and Key Terms sections of Chapter 13. Do the following: Exercises: 13.3, 13.7, 13.9, 13.10, 13.11, 13.13, 13.14 Problem Solving Practice: 13.1, 13.2, 13.3, 13.4, 13.5, 13.6, 13.8, 13.9, 13.10 Test your knowledge by completing the assigned OWL modules. CHAPTER 14 LEARNING OBJECTIVES To satisfy the minimum requirements for this course, you should be able to:...
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- Spring '10