Recorded on April 13, 2012.

Slide Information
00:05 - Introduction
00:19 - Announcements
01:10 - What's in this Lecture?
01:25 - Neglecting electronic energy levels...
01:41 - Vibration, Rotation, Translation Diagrams
02:19 - but we're lucky. We can treat each of these energetic manifolds separately...
02:51 - ...consider first a monoatomic gas in one dimension...
03:43 - ...so its molecular partition function, q, is:
04:29 - Diagram: Calculation of Ground State and Excited State
05:02 - Diagram: ...looking at the energy spacing of the first 100 states...
05:40 - ...If these states are quasi-continuous, we can rewrite this summation...
06:08 - Diagram: ...so after integration we have:
06:13 - Example: Calculate...
07:22 - Diagram: ...is related to the molecular properties through the mass...
08:28 - In terms of...
09:24 - Diagram: the enthalpy, H...
09:52 - Chart: so we can calculate everything for ideal, monoatomic gases...
11:10 - ...this begins to fulfill the promise of Statistical Mechanics:
11:41 - ...works for all ideal molecules.
11:51 - we have a manifold of rotational states that looks like this...
12:20 - ...and the energies of these states are given by the expression...
14:13 - ...B here has units of joules:
14:53 - ...I'm easily confused, so I try to stick to Joules:
15:26 - so let's work out the expression for...
16:01 - our usual expression for q applies for each of these three orthogonal axes:
16:27 - ...so if we write out this series, here's what it is:
18:36 - when B is expressed in Joules, these are the equations for the rotational partition function that apply:
19:43 - what's a symmetry number?
21:14 - huh? what axis?
21:59 - Ammonia
22:36 - Number of Symmetries:
26:55 - Example: Exercise 17.4a What is the symmetry of:
31:11 - Example: What is the symmetry number of:

1. Syllabus, Homework, & Lectures
2. The Boltzmann Distribution Law
3. Energy and q (The Partition Function).
4. Entropy
5. The Equipartition Theorem
6. The Rotational Partition Function
7. Vibrational Partition Functions
8. The First Law
9. Law (review) & Adiabatic Processes Part II
10. Jim Joule
11. Midterm I Review
12. Entropy and The Second Law
13. The Carnot Cycle
14. The Gibbs Energy
15. Getting to Know The Gibbs Energy
16. The Chemical Potential
17. Finding Equilibrium
18. Equilibrium In Action
19. Observational Chemical Kinetics
20. The Integrated Rate Law
21. The Steady State Approximation
22. Midterm Exam Review
23. Lindemann-Hinshelwood Part I
24. Lindemann-Hinshelwood Part II
25. Enzymes Pt. II
26. Transition State Theory
27. The Final Exam

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.

Chemistry Dept. | Physical Sciences Sch. | University of California, Irvine