Chem 131C. Lec. 26. Thermodynamics and Chemical Dynamics. Transition State Theory (English)

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UCI Chem 131C Thermodynamics and Chemical Dynamics (Spring 2012)
Lec 26. Thermodynamics and Chemical Dynamics -- Transition State Theory --
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Instructor: Reginald Penner, Ph.D.

License: Creative Commons BY-NC-SA
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Description: In Chemistry 131C, students will study how to calculate macroscopic chemical properties of systems. This course will build on the microscopic understanding (Chemical Physics) to reinforce and expand your understanding of the basic thermo-chemistry concepts from General Chemistry (Physical Chemistry.) We then go on to study how chemical reaction rates are measured and calculated from molecular properties. Topics covered include: Energy, entropy, and the thermodynamic potentials; Chemical equilibrium; and Chemical kinetics. This video is part of a 27-lecture undergraduate-level course titled "Thermodynamics and Chemical Dynamics" taught at UC Irvine by Professor Reginald M. Penner.

Thermodynamics and Chemical Dynamics (Chem 131C) is part of OpenChem:

Recorded June 6, 2012.

Index of Topics:
00:06 - Transition State Theory
00:13 - Announcements
01:24 - Where Are We?
02:54 - Where Does the Arrhenius Equation Come From?
03:54 - Joke
04:34 - Transition State Theory, Introduction
05:08 - History of the Transition State Theory
06:54 - Transition Sate Theory For a Gaseous Biomolecular Reaction
09:00 - Notation applied to TST
11:16 - Activated Complex
11:52 - Working Out The Reaction Rate
14:30 - Flashback to Ch. 17: Calculating Equilibrium Constants from Partition Functions
16:08 - Difference Between Zero-Point Energies
16:34 - Gibbs Free Energy as a Function of Reaction Coordinate
18:13 - Generic Equilibrium applied to TST
19:15 - TST Equilibrium
20:37 - Frequency
21:17 - Setting Two Expressions for the Reaction Rate Equal to One Another
23:25 - Calculating the Partition Function for the Transition State
25:50 - What is the Partition Function for AB++?
26:28 - Vibration Along the Reaction Coordinate
27:24 - Super Soft Mode
29:26 - Partition Function
30:54 - Rewriting K++
32:06 - The Eyring Equation
35:38 - Calculating the Pre-Exponential Factor in the Arrhenius Equation
36:17 - Applying to a Reaction that Occurs in Water
39:27 - Equilibrium Constants in Solutions are Defined in Terms of Activities
40:26 - Debye-Huckel Limiting Law
41:11 - What D-H Predicts
42:02 - Thermodynamic Equilibrium Constant
42:31 - Comparing K and K'
44:31 - Question: Adding NaCl to a Solution of Acetic Acid
46:32 - Applying this Logic to TST
47:25 - Equation for the Kinetic Salt Effect
48:00 - What Does it Mean?

Required attribution: Penner, Reginald Thermodynamics and Chemical Dynamics 131C (UCI OpenCourseWare: University of California, Irvine), [Access date]. License: Creative Commons Attribution-ShareAlike 3.0 United States License.

Reginald Penner
Chancellor's Professor
Creative Commons License
Chem 131C (Spring 2012): Transition State Theory by Reginald Penner is licensed under a Creative Commons Attribution-ShareAlike Unported 3.0 License
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