7. When is Gibbs-Helmholtz equation useful? What can we calculate with it?

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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This is Physical Chemistry 1.  Please answer #7.  Thanks!

4. What are the definitions of Gibbs free energy, G, and Helmholtz free energy, A? What are
their total differentials, and what are the Maxwell relations?
5. How can we tell if a process is spontaneous using free energy criteria? How do these
criteria compare to entropy criteria?
6. How do you calculate Gibbs and Helmholtz free energy changes for processes done on
ideal gases (e.g. isothermal expansions/compressions, isobaric and isochoric changes)?
7. When is Gibbs-Helmholtz equation useful? What can we calculate with it?
8. Can you calculate AG for reactions using the basic definition of G function, and using AH,
AS?
Transcribed Image Text:4. What are the definitions of Gibbs free energy, G, and Helmholtz free energy, A? What are their total differentials, and what are the Maxwell relations? 5. How can we tell if a process is spontaneous using free energy criteria? How do these criteria compare to entropy criteria? 6. How do you calculate Gibbs and Helmholtz free energy changes for processes done on ideal gases (e.g. isothermal expansions/compressions, isobaric and isochoric changes)? 7. When is Gibbs-Helmholtz equation useful? What can we calculate with it? 8. Can you calculate AG for reactions using the basic definition of G function, and using AH, AS?
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