CHEM 125A - Freshman Organic Chemistry I
Lecture 37 - Potential Energy Surfaces, Transition State Theory and Reaction Mechanism. After discussing the statistical basis of the law of mass action, the lecture turns to developing a framework for understanding reaction rates. A potential energy surface that associates energy with polyatomic geometry can be realized physically for a linear, triatomic system, but it is more practical to use collective energies for starting material, transition state, and product, together with Eyring theory, to predict rates. Free-radical chain halogenation provides examples of predicting reaction equilibria and rates from bond dissociation energies. The lecture concludes with a summary of the semester's topics from the perspective of physical-organic chemistry. (from oyc.yale.edu)
| Lecture 37 - Potential Energy Surfaces, Transition State Theory and Reaction Mechanism |
| Time | Lecture Chapters |
| [00:00:00] | 1. The Boltzmann Factor and Entropy Against Traditional Views on Society |
| [00:07:41] | 2. The Statistical Basis of the Law of Mass Action |
| [00:13:13] | 3. Understanding Reaction Rates: The Potential Energy Surface and Collective Energies |
| [00:29:40] | 4. Free Radical Halogenations: Predicting Reaction Equilibria and Rates |
| [00:43:01] | 5. A Summary of the First Semester |
| References |
| Lecture 37 - Potential Energy Surfaces, Transition State Theory and Reaction Mechanism Instructor: Professor J. Michael McBride. Resources: Professor McBride's website resource for CHEM 125 (Fall 2008). Transcript [html]. Audio [mp3]. Download Video [mov]. |
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