Premium
Gibbs Free Energies of Formations of the Magnesium and Calcium Germanates at High Temperatures
Author(s) -
PYUN SUIL
Publication year - 1984
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1984.tb19600.x
Subject(s) - gibbs free energy , calorimetry , magnesium , thermodynamics , galvanic cell , chemistry , calcium , standard enthalpy of formation , enthalpy , mineralogy , inorganic chemistry , materials science , physics , organic chemistry
The relative chemical potentials and partial molar solution enthalpies of the quasi‐binary systems MgO‐GeO 2 and CaO‐GeO 2 , were determined by means of solid‐state galvanic cells and high‐temperature solution calorimetry, respectively. The standard free energies of formation of the corresponding germanates, MgGeO 3 , CaGeO 3 , CaGe 4 O 9 , are presented as a function of temperature.