CHEM 125A - Freshman Organic Chemistry I
Lecture 36 - Bond Energies, the Boltzmann Factor and Entropy. After discussing the classic determination of the heat of atomization of graphite by Chupka and Inghram, the values of bond dissociation energies, and the utility of average bond energies, the lecture focuses on understanding equilibrium and rate processes through statistical mechanics. The Boltzmann factor favors minimal energy in order to provide the largest number of different arrangements of "bits" of energy. The slippery concept of disorder is illustrated using Couette flow. Entropy favors "disordered arrangements" because there are more of them than there are of recognizable ordered arrangements. (from oyc.yale.edu)
| Lecture 36 - Bond Energies, the Boltzmann Factor and Entropy |
| Time | Lecture Chapters |
| [00:00:00] | 1. Chupka and Inghram's Determination of Graphite's Heat of Atomization |
| [00:14:20] | 2. Calculating Equilibrium Constants from Bond Dissociation Energies |
| [00:27:55] | 3. The Boltzmann Factor: How is Temperature Related to Energy? |
| [00:36:24] | 4. Entropy and the Tendency toward "Disordered Arrangements" |
| References |
| Lecture 36 - Bond Energies, the Boltzmann Factor and Entropy 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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