Titre : Use of the IdEP-IdLA model for the study of aggregative processes in closed systems Auteurs : Vittorio Cocchi, Rossana Morandi, Revue : Entropy: Thermodynamics – Energy – Environment – Economy Numéro : Issue 1 Volume : 2 Date : 2021/10/11 DOI : 10.21494/ISTE.OP.2021.0741 ISSN : 2634-1476 Résumé : As a consequence of the results obtained in a previous work, the study of aggregative reactions in closed gas systems is here addressed. Using the IdEP-IdLA mathematical model, the fundamental formulas that describe both autopoietic and heteropoietic aggregative processes are expounded. Particular emphasis is placed on the different roles that chance and necessity play according to the coding level of the processes themselves. The model responds coherently with the physical chemistry of reactions in a wide range of conditions, thus being accredited as a promising tool of theoretical investigation. In particular, in heteropoietic processes, the need to extend the entropic balance to coding agents (not only as order promoters but also as producers of compensatory entropy) is demonstrated. Éditeur : ISTE OpenScience