Abstract
Thermochemistry deals with the heat transferred or released by a system during a change of its state or a chemical reaction. Calorimetry is an experimental method for measuring such heat transfers. The reaction enthalpy, the reaction entropy, and the Gibbs free energy of reaction are defined and related to the molar standard enthalpies of formation and molar standard entropies of reactants and products. The selection of problems in this chapter deals with key aspects of thermochemistry, such as the determination of molar heat of formation. Problem 4.3 exemplifies the use of the Gibbs free energy of reaction as a criterion for the occurrence of chemical processes.
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- 1.
For the definition of the standard state see Sect. 3.4.1
- 2.
For the calculation of the absolute entropy of monatomic gases based on statistical thermodynamics, see Problem 8.6.
- 3.
- 4.
Electrolyte solutions are electrically neutral, requiring at least two different kinds of charged species in a calorimetric experiment.
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Vogt, J. (2017). Thermochemistry. In: Exam Survival Guide: Physical Chemistry. Springer, Cham. https://doi.org/10.1007/978-3-319-49810-2_4
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DOI: https://doi.org/10.1007/978-3-319-49810-2_4
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