Criteria for Spontaneous Processes Derived from the Global Point of View

Title:
Criteria for Spontaneous Processes Derived from the Global Point of View
Authors:
Gislason, Eric A.; Craig, Norman C.
Abstract:
Starting with the fundamental and general criterion for a spontaneous process in thermodynamics, ΔStot ≥ 0, we review its relationships to other criteria, such as ΔA and ΔG, that have limitations. The details of these limitations, which can be easily overlooked, are carefully explicated. We also bring in the important example of electrical energy to show how criteria for spontaneity are properly applied to electrochemical cells. The analysis in this article gains clarity from use of the “global” formulation of thermodynamics and from carrying out finite changes of thermodynamic properties rather than manipulating differential changes. Several examples are given.
Citation:
Gislason, Eric A. and Norman C. Craig. 2013. "Criteria for Spontaneous Processes Derived from the Global Point of View." Journal of Chemical Education 90(5): 584-590.
Publisher:
American Chemical Society, Division of Chemical Education
DATE ISSUED:
2013
Department:
Chemistry
Type:
Article
PUBLISHED VERSION:
10.1021/ed300570u
PERMANENT LINK:
http://hdl.handle.net/11282/334016

Full metadata record

DC FieldValue Language
dc.contributor.authorGislason, Eric A.en
dc.contributor.authorCraig, Norman C.en
dc.date.accessioned2014-11-10T14:12:32Zen
dc.date.available2014-11-10T14:12:32Zen
dc.date.issued2013en
dc.identifier.citationGislason, Eric A. and Norman C. Craig. 2013. "Criteria for Spontaneous Processes Derived from the Global Point of View." Journal of Chemical Education 90(5): 584-590.en
dc.identifier.issn0021-9584en
dc.identifier.urihttp://hdl.handle.net/11282/334016en
dc.description.abstractStarting with the fundamental and general criterion for a spontaneous process in thermodynamics, ΔStot ≥ 0, we review its relationships to other criteria, such as ΔA and ΔG, that have limitations. The details of these limitations, which can be easily overlooked, are carefully explicated. We also bring in the important example of electrical energy to show how criteria for spontaneity are properly applied to electrochemical cells. The analysis in this article gains clarity from use of the “global” formulation of thermodynamics and from carrying out finite changes of thermodynamic properties rather than manipulating differential changes. Several examples are given.en
dc.language.isoen_USen
dc.publisherAmerican Chemical Society, Division of Chemical Educationen
dc.identifier.doi10.1021/ed300570uen
dc.subject.departmentChemistryen
dc.titleCriteria for Spontaneous Processes Derived from the Global Point of Viewen
dc.typeArticleen
dc.identifier.journalJournal of Chemical Educationen
dc.subject.keywordPhysical chemistryen
dc.subject.keywordProblem solvingen
dc.subject.keywordCalorimetryen
dc.subject.keywordElectrolytic/Galvanicen
dc.subject.keywordEquilibriumen
dc.subject.keywordHeat capacityen
dc.subject.keywordThermodynamicsen
dc.subject.keywordThermochemistryen_US
dc.subject.keywordDecision makingen_US
dc.identifier.volume90en
dc.identifier.issue5en
dc.identifier.startpage584en
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