Determination of thermodynamic data of Ln1.85Ce0.15CuO4 and Ln2CuO4 (Ln=Nd,Sm,Eu) by the EMF method

1992 ◽  
Vol 195 (3-4) ◽  
pp. 269-276 ◽  
Author(s):  
Yayushi Idemoto ◽  
Isao Oyagi ◽  
Kazuo Fueki
Keyword(s):  
Thermodynamic Data ◽  
Emf Method

Untersuchungen zum ternären System Bi/Te/O, III. Bestimmung thermodynamischer Daten der ternären Verbindungen/Investigations on the Ternary System Bi/Te/O,III. Determination of Thermodynamic Data of Ternary Compounds

1999 ◽  
Vol 54 (2) ◽  
pp. 252-260 ◽  
Author(s):  
P. Schmidt ◽  
C. Hennig ◽  
H. Oppermann
Keyword(s):  
Solid State ◽  
Ternary System ◽  
Thermodynamic Data ◽  
Phase Relations ◽  
Solid State Reactions ◽  
Enthalpies Of Formation ◽  
Ternary Compounds ◽  
Heats Of Solution

The phase relations in the ternary system Bi/Te/O have been determined in previous studies by solid state reactions. Thermodynamical data have now been obtained for the pertinent equilibria. The heats of solution of Bi2O3, Bi12TeO20, Bi10Te2O19, Bi16Te5O34, Bi2TeO5, Bi2Te2O7, Bi2Te4O11 and TeCl4 were determined in 4N HCl. From these the enthalpies of formation of bismuth tellurites at 298 K have been derived:⊿H°b (Bi12TeO20, f, 298) = -901,6 ± 8 kcal/mol,⊿H°b (Bi10Te2O19, f, 298) = -856,1 ± 9 kcal/mol,⊿H°b (Bi16Te5O34, f, 298) = -1519,5 ± 17 kcal/mol,⊿H°b (Bi2TeO5, f, 298)= -222,8 ± 3 kcal/mol,⊿H°b (Bi2Te2O7, f, 298)= -299,4 ± 4 kcal/mol,⊿H°b (Bi2Te4O11, f, 298)= -448,2 ± 7 kcal/mol.

On the Possibility of Determination of Thermodynamic Functions of the Li–S Electrochemical System Using the EMF Method

2019 ◽  
Vol 55 (10) ◽  
pp. 978-988
Author(s):  
E. V. Kuz’mina ◽  
E. V. Karaseva ◽  
N. V. Chudova ◽  
A. A. Mel’nikova ◽  
V. S. Kolosnitsyn
Keyword(s):  
Thermodynamic Functions ◽  
Emf Method ◽  
Electrochemical System

Determination of the Stability of the AIO+ Complex in Alkali Halide Melts*

1984 ◽  
Vol 39 (5) ◽  
pp. 499-502 ◽  
Author(s):  
C. M. Wai ◽  
M. Blander
Keyword(s):  
Free Energy ◽  
Bond Strength ◽  
Mole Fraction ◽  
Thermodynamic Data ◽  
Alkali Halide ◽  
Formation Constant ◽  
Activation Technique ◽  
Eutectic Mixtures ◽  
The Stability

The solubilities of Al182O3 in LiCl-KCl eutectic mixtures containing dissolved AlCl3 were measured using a sensitive proton activation technique. The results are consistent with the presence of an A10+ species at 4.7 x 10-5 mole fraction with AlCl3 at 10-2 mole fraction. When combined with other thermodynamic data, these solubilities are used to deduce a formation constant for the A10+ species from Al3+ and O2- ions of 1.94 x 1022 (in mole fraction units) and a specific bond free energy ("bond strength") of 300 kJ mol-1

Determination of thermodynamic properties of Ca 4 Fe 9 O 17 by solid state EMF method

2016 ◽  
Vol 658 ◽  
pp. 939-945 ◽  
Author(s):  
Markus Aspiala ◽  
Taufiq Hidayat ◽  
Pekka Taskinen ◽  
Evgueni Jak
Keyword(s):  
Solid State ◽  
Thermodynamic Properties ◽  
Emf Method
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