COORDINATION COMPOUNDS. VI. DETERMINATION OF THERMODYNAMIC DATA FOR ACETYLACETONE IN MIXED SOLVENTS

1963 ◽  
Vol 67 (7) ◽  
pp. 1447-1450 ◽  
Author(s):  
Philip S. Gentile ◽  
Michael. Cefola ◽  
Alfred V. Celiano
Keyword(s):  
Thermodynamic Data ◽  
Coordination Compounds ◽  
Mixed Solvents

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.

scholarly journals Thermoacoustic Parameters Determination of Intermolecular Free-Length of 1-Butyl-2,3-dimethylimidazolium Chloride in Mixed Solvents at T = (298.15 to 313.15) K

2019 ◽  
Vol 31 (12) ◽  
pp. 2719-2724
Author(s):  
Sailaja Muchipali ◽  
Ranjan Kumar Pradhan ◽  
Priyaranjan Mohapatra ◽  
Braja B. Nanda
Keyword(s):  
Comparative Study ◽  
Ultrasonic Method ◽  
Pure Water ◽  
Mixed Solvents ◽  
Ammonium Bromide ◽  
Free Length ◽  
Intermolecular Free Length

The intermolecular free-length of 1-butyl-2,3-dimethylimidazolium chloride [bdmim]Cl in pure water as well as in tetra-n-butyl ammonium bromide (TBAB) + water at different concentrations of solute and at T = (298.15 to 313.15) K have been evaluated by making use of ultrasonic and thermoacoustical parameters followed by a comparative study. To accomplish this objective, thermoacoustical parameters for the above said solutions have been calculated. These parameters have been used to determine intermolecular free-length (Lf) for the solutions under study. The values of Lf obtained by thermoacoustical approach were tallied with the values obtained by well-known ultrasonic method (Schaaffs method). To the best of our understanding, this study is an innovative attempt in the determination of inter-molecular free-length present in the investigated solutions by making use of ultrasonic approach.

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

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