**Copyright Information:**Penner, Reginald Thermodynamics and Chemical Dynamics 131C (UCI OpenCourseWare: University of California, Irvine), http://ocw.uci.edu/courses/chem_131c_thermodynamics_and_chem... [January 28, 2015]. License: Creative Commons Attribution-ShareAlike 3.0 United States License. (http://creativecommons.org/licenses/by-sa/3.0/us/deed.en_US).

### Lecture Description

Slide Information

00:05 - some announcements

00:44 - Chem 131 C Quiz 6

03:23 - Youtube search for Chem Lectures

03:34 - chemistry lecture page with YouTube link

03:53 - what does Midterm Exam 2 cover?

04:46 - "what does Midterm Exam 2 cover?"

06:12 - Papers about La Chatellier Principle

06:52 - what was I thinking about? The ammonia synthesis reaction is:

08:10 - what was I thinking about? Iron is a catalyst for this reaction in the Haber-Bosch process...

13:38 - Problem I - entropy and the Carnot cycle (see especially Lecture 13)

14:13 - entropy - statistical definition:

14:32 - Diagram: now, there are three flavors of systems:

15:05 - The Carnot Cycle

15:16 - a heat engine extracts work from a temperature gradient.

15:37 - Graph: The Carnot Cycle

16:22 - Graph: ...ANY process can be decomposed into...

18:12 - Graph: What do we know for sure?

19:47 - how efficient is the heat engine?

20:21 - Diagram (work over heat)

20:39 - how efficient is a Carnot Cycle?

22:47 - Graph: ...now this pair...

23:49 - let's prove this...

24:03 - so the total work is:

24:51 - Problem: What is the entropy change...

25:08 - Since S is a state function we can write...

26:08 - so represented in a Temperature-Entropy diagram, a Carnot cycle looks like this...

26:33 - What if one or more steps of the process are irreversible?

27:37 - and a more general statement of this is called the Claussius Inequality

28:19 - This equation makes predictions about 3 types of processes:

28:41 - some simple but important examples:

29:18 - some simple but important examples: example - a reversible phase transition.

29:51 - example - reversible heating/cooling of a gas.

30:48 - rev. expansion/compression of a gas.

31:45 - Calculating entropy changes for reversible processes on ideal gases:

32:26 - because S is a state function...

33:20 - Because S, like U, is a state function, you can add up...

33:53 - Calculate the entropy change when...

36:47 - Problem 2

37:09 - chemical potential of species...

37:38 - really? yes, think about this way ("...partial derivative")

38:24 -...you should know...

### Course Index

- Syllabus, Homework, & Lectures
- The Boltzmann Distribution Law
- Energy and q (The Partition Function).
- Entropy
- The Equipartition Theorem
- The Rotational Partition Function
- Vibrational Partition Functions
- The First Law
- Law (review) & Adiabatic Processes Part II
- Jim Joule
- Midterm I Review
- Entropy and The Second Law
- The Carnot Cycle
- The Gibbs Energy
- Getting to Know The Gibbs Energy
- The Chemical Potential
- Finding Equilibrium
- Equilibrium In Action
- Observational Chemical Kinetics
- The Integrated Rate Law
- The Steady State Approximation
- Midterm Exam Review
- Lindemann-Hinshelwood Part I
- Lindemann-Hinshelwood Part II
- Enzymes Pt. II
- Transition State Theory
- The Final Exam

### Course 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.

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