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Chemical potential of a compound

This clip from the Physical Chemistry book explains how concentration changes with pressure. Changing the pressure on a gas can change the number of moles.

This leads us to the concept of the chemical potential: each compound has a potential to react and has its own molar Gibbs free energy. The greater the chemical potential is negative (at constant T and P) the greater the potential to react and minimize the Gibbs energy for the whole reaction.

Written by: Dr. Bryan Sanctuary

Bryan Sanctuary has authored 17 more articles.

Bryan Sanctuary, Professor of Chemistry at McGill University (Montreal, Canada) as well as president of MCH Multimedia. | www.mchmultimedia.com | and co- author of Physical Chemistry - Laidler, Meiser, Sanctuary. You can also read about Quantum mechanics and Physical Chemistry on Bryan's personal blog: http://quantummechanics.mchmultimedia.com/

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Thermodynamics Module - Physical Chemistry
Thermodynamics module
Chapters 1 to 6 of Physical Chemistry - Laidler, Meiser, Sanctuary


Includes multimedia that opens on relevant pages and allows the student to visualize many of the concepts by varying parameters and plotting different graphs. Things students often have difficulty with, such as isothermal, isobaric, isochoric and adiabatic process, are clearly visualized.

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Physical Chemistry - Laidler, Meiser, Sanctuary
Physical Chemistry textbook
by Laidler, Meiser, Sanctuary


This popular Physical Chemistry text book is now available in electronic format. We have preserved much of the material of the former hard copy editions, making changes to improve understanding of the concepts in addition to including some of the recent discoveries in physical chemistry. Many chapters have new sections and the coverage of several chapters has been greatly expanded.

Get it from: Physical Chemistry - Laidler, Meiser, Sanctuary

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