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Read the articleAUTHORS
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Stéphane VEESLER: Doctor of Materials Science Research Fellow at the Centre de recherche sur les mécanismes de la croissance cristalline (CRCM2) - Laboratory associated with the universities of Aix-Marseille II and III CNRS, Luminy campus, Marseille
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Bernard LEFRANÇOIS: Professor at the Conservatoire national des arts et métiers
INTRODUCTION
During an isothermal reaction or transformation taking place at constant pressure, the amount of heat received, or supplied, by the system is equal to its enthalpy variation.
If the reaction is endothermic, energy must be supplied to the system and the enthalpy change, ΔH, is positive.
If the reaction is exothermic, it develops by releasing heat, and the enthalpy variation, ΔH, is negative.
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