Thermodynamic properties of cadmium selenide

Abstract

The free energy of formation of CdSe has been determined by an electrochemical technique using a molten salt electrolyte. From measurements of the open-circuit e.m.f. of the galvanic cell at different temperatures the following relationship for ΔGf0 vs. T has been established: ΔGf0 = -159403 + 36.14T J mol-1 (640 < T < 825 K) The enthalpy of formation has been measured in a differential thermal analysis (DTA) calorimeter. The entropy of formation has been obtained by combining these experimentally determined values. © 1990.