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The Constituent Additivity Method to Estimate Heat Capacities of Complex Inorganic Solids
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Abstract
Heat capacity is one of the most fundamental of all physical properties, yet it is exceedingly unlikely that it will be determined experimentally for all materials. Heat capacity plays an important role in understanding thermodynamic stability, from the perspective of relative enthalpies, entropies, and Gibbs energies of comparative compounds. Therefore, methods to estimate a material's heat capacity could be very useful. We outline such a method for complex inorganic solids, based on additivity of constituent species. This method is especially useful at and above about 150 K, often giving results within a few percent of experimental determinations. Several examples are presented, and the utility and limitations of this method of heat capacity estimation and its uses in teaching are discussed.
Keywords (Audience):
Upper-Division UndergraduateKeywords (Domain):
Physical ChemistryKeywords (Subject):
Calorimetry / ThermochemistryCiting Articles
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This article has been cited by 2 ACS Journal articles (2 most recent appear below).
Ambient Isobaric Heat Capacities, Cp,m, for Ionic Solids and Liquids: An Application of Volume-Based Thermodynamics (VBT)
Leslie Glasser and H. Donald Brooke JenkinsInorganic Chemistry2011 Article ASAPAmbient Isobaric Heat Capacities, Cp,m, for Ionic Solids and Liquids: An Application of Volume-Based Thermodynamics (VBT)
Leslie Glasser and H. Donald Brooke JenkinsInorganic Chemistry2011 Article ASAPThermodynamic properties, such as standard entropy, among others, have been shown to correlate well with formula volume, Vm, thus permitting prediction of these properties on the basis of chemical formula and density alone, with no structural detail ...
Dulong and Petit's Law: We Should Not Ignore Its Importance
Mary Laing and Michael LaingJournal of Chemical Education2006 83 (10), 1499Dulong and Petit's Law: We Should Not Ignore Its Importance
Mary Laing and Michael LaingJournal of Chemical Education2006 83 (10), 1499Dulong and Petit's law played an important role in the development of the periodic table as Mendeleyeff used this method in 1870 to correct the atomic weights of indium, cerium, and uranium that were wrong in the table of 1869. The discontinuous variation ...
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History
- Received: August 03, 2009
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