Article
Article
- Chemistry
- Physical chemistry
- Thermochemistry
- Physics
- Thermodynamics and heat
- Thermochemistry
Thermochemistry
Article By:
Wilhoit, Randolph C. Thermodynamics Research Center, Texas A&M University, College Station, Texas.
Last reviewed:June 2020
DOI:https://doi.org/10.1036/1097-8542.690300
Show previous versions
- Thermochemistry, published January 2014:Download PDF Get Adobe Acrobat Reader
- Thermodynamic principles
- Internal energy
- Enthalpy
- Heats of reaction
- Calorimetric measurements
- Units and symbols
- Sources of data
- Heating values
- Related Primary Literature
- Additional Reading
A branch of physical chemistry concerned with the absorption or evolution of heat that accompanies chemical reactions. Closely related topics to thermochemistry are the latent heat associated with a change in phase (crystal, liquid, gas) (see illustration), the chemical composition of reacting systems at equilibrium, and the electrical potentials of galvanic cells. Thermodynamics provides the link among these phenomena.
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