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N. V. Bagarat’jan, A. V. Makarov, S. G. Zbezhneva, I. N. Odin
Equilibrium
Vaporization of Cadmium Selenide and Termodynamic Properties of CdSe Molecule
in Gas Phase
Abstract
Vapor composition over crystalline
CdSe has been determined by mass-spectrometry with the Knudsen effusion method
in temperature range 866,5–1007,7 K. Partial pressures of vapor constituents
and Kp0 (T)
of the reaction CdSe(c) = Cd(g)+0.5Se2(g) have
been determined. Upper limit of the partial pressure of CdSe have been
estimated. Termochemical characteristics of CdSe were calculated to be DsH0(c,0)³338; DfH0(g,0)³196; D0£143 kJ×mole–1.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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