SEMI-EMPIRICAL METHODS FOR DETERMINING THE HEAT CAPACITY VALUES FOR SOLID INORGANIC COMPOUNDS

Abstract

Modern precise experimental studies of the heat capacity values for inorganic compounds require expensive equipment. Therefore, in practice the above values are frequently estimated by using certain semi-empirical methods developed as a cheaper alternative to the experimental determinations. In particular, estimation of the isobaric heat capacity is possible, with sufficient accuracy, for many inorganic solids by using the Neumann‒Kopp, Kellogg‒Kubaschewski, and Berman‒Brown methods [1]. Sometimes, researchers employ for that purposes somewhat less precise but more universal approaches, such as the Sokolskii model [2] (applicable to a larger number of objects, including even the objects of organic nature) or crystal-energy semi-empirical calculations [3].