Finding Equilibrium 
Finding Equilibrium
by UC Irvine
Video Lecture 17 of 27
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).
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Date Added: January 28, 2015

Lecture Description

Recorded on May 9, 2012.

Slide Information
00:06 - Introduction Finding Equilibrium
00:21 - today:
00:58 - how do individual reactant and product...
01:22 - what can we deduce about the equilibrium state...
01:35 - we know, after we open the valve...
02:19 - so with the valve open, we showed that the mixing stops when:
03:35 - the chemical potential of species I.
04:47 - really? yes, think about it this way:
07:16 - you should know...
10:18 - Now, we already understand that G is minimized upon...
10:31 - now, before we go further, let's clear up a mystery...
11:25 - let's return to our two gas bulbs:
11:42 - ...let's return to...
12:02 - Diagram: ...we open the valve...
12:31 - Let's calculate G:
14:49 - hey, that's not on the line.
15:51 - now, since we know: ΔG = ΔH - TΔS...
16:38 - Graph
17:59 - resveratrol makes things live longer...what things?
18:22 - resveratrol makes things live longer...what things (photos)
18:46 - it also prevents cancer in mice...
19:20 - and resveratrol is found in red wine.
19:42 - does this have anything to do with thermodynamics?
20:19 - consider this generic isomerization reaction:
21:01 - Example
21:14 - now, our plot of G versus reaction coordinate...
21:46 - we define the slope of this plot at any value...
23:08 - so under conditions of const. P and...
24:58 - "that means there's three types of reactions..."
25:20 - It's a strange word, infrequently used even by chemists...
25:51 - Exergonic
25:57 - ok, but we still have not learned any more about WHERE equilibrium...
26:40 - we define a standard molar Gibbs free energy...
28:19 - ok, now for every value of...
29:45 - in other words...
30:00 - what does this mean?
31:23 - ...refresher on...

Course Index

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

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