che320_class1edited

che320_class1edited - hase & Chemical Equilibrium 1...

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Unformatted text preview: hase & Chemical Equilibrium 1 Darrell Velegol ChE 320 Fall 2009 Chapter 01 2 Introduction 1 Introduction • today . equilibrium problems: phase and chemical syllabus perspectives: continuum, molecular • announce . None yet. ssignments omework assigned on Wednesday. 3 • assignments . Homework assigned on Wednesday. Example: Phase equilibrium A rigid plastic bottle, filled with a bit of water, is heated in a microwave. After the water is heated, a cap is put on the bottle, and the bottle put into the freezer. Describe what you expect to see. 4 Equilibrium problems are not “work problems” • In EB, calculate work. • Compressors, turbines, pumps • … but we use same thermo • Combine EB and MB 5 GENERAL CHEMICAL EQUILIBRIUM PROBLEM M phases, having N components, in contact. What are the compositions in the final phases? Example: Chemical Equilibrium NO 2 and N 2 O 4 in equilibrium … then change temperatures. What happens? 6 YouTube of NO 2 and N 2 O 4 http://www.youtube.com/watch?v=tlGrBcgANSY&feature=PlayList&p=6E4034EE83426837&index=4 7 hot (brown NO 2 ) cold (clear N 2 O 4 ) 2NO 2 = N 2 O 4 Other equilibria you know 8 hydrostatics statics of solids electro-mechanical Quantifying Le Ch u telier's Principle If a chemical system at equilibrium experiences a change in concentration, temperature, volume, or partial pressure,...
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This note was uploaded on 08/22/2010 for the course CH E 320 taught by Professor Matsoukas,themist during the Fall '09 term at Penn State.

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che320_class1edited - hase & Chemical Equilibrium 1...

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