Thermochemistry | Wikipedia audio article
Channel: wikipedia tts
Date: 11/01/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Thermochemistry


00:01:00 1 History
00:02:03 2 Calorimetry
00:02:14 3 Systems
00:02:23 4 Processes
00:02:55 5 See also
00:03:58 6 References
00:04:31 7 External links



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SUMMARY
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Thermochemistry is the study of the heat energy associated with chemical reactions and/or physical transformations.  A reaction may release or absorb energy, and a phase change may do the same, such as in melting and boiling.  Thermochemistry focuses on these energy changes, particularly on the system's energy exchange with its surroundings.  Thermochemistry is useful in predicting reactant and product quantities throughout the course of a given reaction. In combination with entropy determinations, it is also used to predict whether a reaction is spontaneous or non-spontaneous, favorable or unfavorable.
Endothermic reactions absorb heat, while  exothermic reactions release heat.  Thermochemistry coalesces the concepts of thermodynamics with the concept of energy in the form of chemical bonds.  The subject commonly includes calculations of such quantities as heat capacity, heat of combustion, heat of formation, enthalpy, entropy, free energy, and calories.