Thermodynamics and Chemical Dynamics 131C. Lecture 04. Entropy.

UCI Chem 131C Thermodynamics and Chemical Dynamics (Spring 2012)
Lec 04. Thermodynamics and Chemical Dynamics -- Entropy --
Instructor: Reginald Penner, Ph.D.

License: Creative Commons BY-NC-SA

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.

Recorded on April 9, 2012.

Index of Topics:
0:04:17 Boltzmann Distribution Law
0:15:37 Three Types of Ensembles
0:31:55 S = k ln W

[tokajileo]

actually the notion entropy was first described by Clausius, he was the one who gave it the name. Boltzmann gave the deep true understanding of what is really is but it was invented by Clausius. He also gave it the letter "S" for honoring Sadi Carnot (S=Sadi) and his work.

[kagodikomang]

distinguisable q>N HAS nothing to do with the power N...THE PARTITION FUNCTION NATURALLY INHERITS ITS DISTINGUISHABility FROM DERIVATION OF BOLTZMANN DISTRIBUTION FUNCTION, WE DID ASSUME PARTICLES WERE DISTIGUISHABLE WHEN DERIVING TOTAL NUMBER OF CONFIGURATIONS HENCE THE BOLTZMANN DISTRIBUTION { Wdeg* W non-deg = Wtotal] since particles are non-distinguishable we devide q>N BY N FACTORIAL TO GET ONE CONFIGURATION AND REMOVE REPEATS THAT WERE ENFORCED IN THE PARTITION FUNCTION WHEN DERIVING MAXWELL-BOLTZMANN DISTRIBUTION FUNCTION. THIS WAS FOR ONE PARTICLE IN THE BOX BUT SINCE WE HAVE ''N'' PARTICLES WE MUKLTIPLY q, N times to get Q>N