Détermination des constantes thermodynamiques d'équilibres en solution par calorimétrie à conduction et flux de réactif: I. Description de la méthode

An injection apparatus attached to the two elements of a conduction microcalorimeter allows measurement of the thermal change arising from displacement of the equilibria in the liquid phase.Analysis of the thermograms obtained leads to the simultaneous determination of the enthalpy increase and the equilibrium constants. The high sensitivity of the thermal fluxmeter used, a calorimeter of the Calvet type, its excellent temperature stability allows, under certain conditions, the observation of successive equilibria and thus facilitates the interpretation of the phenomena.