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109-f09_exam_3_objectives_revised

109-f09_exam_3_objectives_revised - Exam 3 Objectives Chem...

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Exam 3 Objectives Chem 109 Fall 2009 Basic Objectives Given a reaction mechanism, identify intermediates and catalysts. Write rate laws for each of the elementary steps when given a stepwise mechanism for a reaction. Define the terms catalyst, enzyme, substrate, and inhibitor. • Recognize and use thermodynamic terms: system, surroundings, heat, work, temperature, thermal equilibrium, exothermic, endothermic, and state function. • Know the direction of heat transfer in endothermic and exothermic processes and use proper sign conventions in discussing heat transfer. • Identify the reaction whose enthalpy change is the standard heat of formation for any substance. • Calculate the enthalpy change for a reaction using calorimetric data, using Hess' Law, or using standard molar enthalpies of formation. • Calculate the heat transferred during a reaction using stoichiometry and the enthalpy change. • Use qualitative rules to predict the sign of the entropy change for a process. • Calculate the entropy change for a process occurring at constant temperature.
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