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Thermodynamics and Chemical Dynamics 131C. Lecture 08. The First Law.

Published by Admin in Chemical Thermodynamics

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Thermodynamics and Chemical Dynamics (Chem 131C) is part of OpenChem: video is part of a 27-lecture undergraduate-level course titled "Thermodynamics and Chemical Dynamics" taught at UC Irvine by Professor Reginald M. Penner.Recorded on April 18, 2012.00:01 - Announcements00:58 - Example: the triatomic molecule, chlorine dioxide...04:27 - Plot of equation (Diagram)09:40 - Thermodynamics11:39 - Energy14:24 - In Thermodynamics, we divide the universe into the system...15:30 - Diagram: Now there are three flavors of systems:17:32 - Glossary of Thermodynamic Jargon (Types of Equilibrium)18:15 - We'll be talking about closed systems until further notice.20:23 - now, we know what heat is, but what is work?21:28 - let's think about mechanical work...23:54 - the external force is:25:57 - now what happens to the volume?28:27 - Example: Calculate the work required to compress...30:15 - Our equation for work...31:45 - Answer: Graphically, this experiment is as shown below...34:23 - So instead of compressing the piston using the entire mass necessary...35:01 - Diagram: Step 135:18 - Step 236:22 - Conclusion:36:24 - Diagram: so, more steps means less work.36:52 - In the thermodynamics, a reversible process is any process the direction of which can be reversed by...38:54 - Diagram: so instead of dividing the mass into two parts...40:07 - ...add one granule at a time to the piston40:50 - So as an example...43:38 - Chart: Summary:44:37 - Let me just point out that both of these equations conform...45:47 - other flavors of work...46:27 - that's w, what about q?For more information and access to courses, lectures, and teaching material, please visit the official UC Irvine OpenCourseWare website at:

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