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

UCI Chem 131C Thermodynamics and Chemical Dynamics (Spring 2012)

Lec 26. Thermodynamics and Chemical Dynamics -- Transition State Theory --

View the complete course: http://ocw.uci.edu/courses/chem_131c_thermodynamics_and_chemical_dynamics.html

Instructor: Reginald Penner, Ph.D.

License: Creative Commons BY-NC-SA

Terms of Use: http://ocw.uci.edu/info.

More courses at http://ocw.uci.edu

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: http://ocw.uci.edu/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), http://ocw.uci.edu/courses/chem_131c_thermodynamics_and_chemical_dynamics.html. [Access date]. License: Creative Commons Attribution-ShareAlike 3.0 United States License.

- Author:
- Reginald Penner
- Title:
- Chancellor's Professor
- Department:
- Chemistry

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