Handout7_Chapter15_16_17 - Chemistry 008 Dr. Neal Abrams...

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Chemistry 008 Handout #7 Dr. Neal Abrams brought to you by the Spring 2007 Learning Strategies Center NOTE: This review sheet is for Chem 008 attendees and is to be used in conjunction with lecture notes, handouts, problem sets, the textbook, the laboratory manual, and notes from Chem 008. Chapters 15, 16, 17 Review Guide Lectures 3/6 and 3/8 I. Le Chatlier’s Principle - qualitative a. When an equilibrium system is stressed, a reaction occurs in the direction that relieves the stress. The stresses to the system can be in the form of changes in concentration, pressure, volume, or temperature. b. A system shifts towards a decrease and away from an increase in concentration. c. An increase in the total pressure because of a decrease in volume will cause a shift towards the side with the fewer moles of gas and vice versa. (But an increase in total pressure because of the addition of an unreactive gas has no effect.) d. Any change in temperature can be treated in the same way as a change in concentration, where heat is the reactant in an endothermic reaction and the product in an exothermic reaction. e.
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Handout7_Chapter15_16_17 - Chemistry 008 Dr. Neal Abrams...

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