Sn2S3, PbSnS3, SnGeS3, PbGeS3 heat capacity, density, heat of formation .

2005 ◽  
pp. 1-2
Author(s):  
Keyword(s):  
Heat Capacity ◽  
Heat Of Formation

HEAT CAPACITY FROM 11 TO 300°K., ENTROPY, AND HEAT OF FORMATION OF DOLOMITE

1963 ◽  
Vol 67 (11) ◽  
pp. 2248-2252 ◽  
Author(s):  
J. W. Stout ◽  
Richard A. Robie
Keyword(s):  
Heat Capacity ◽  
Heat Of Formation

Thiacyclopentane: Heat Capacity, Heats of Fusion and Vaporization, Vapor Pressure, Entropy, Heat of Formation and Thermodynamic Functions1

1952 ◽  
Vol 74 (23) ◽  
pp. 6025-6030 ◽  
Author(s):  
W. N. Hubbard ◽  
H. L. Finke ◽  
D. W. Scott ◽  
J. P. McCullough ◽  
C. Katz ◽  
...  
Keyword(s):  
Heat Capacity ◽  
Vapor Pressure ◽  
Heat Of Formation

Thiacyclobutane: Heat Capacity, Heats of Transition, Fusion and Vaporization, Vapor Pressure, Entropy, Heat of Formation and Thermodynamic Functions1

1953 ◽  
Vol 75 (12) ◽  
pp. 2795-2800 ◽  
Author(s):  
D. W. Scott ◽  
H. L. Finke ◽  
W. N. Hubbard ◽  
J. P. McCullough ◽  
C. Katz ◽  
...  
Keyword(s):  
Heat Capacity ◽  
Vapor Pressure ◽  
Heat Of Formation

3-Thiapentane: Heat Capacity, Heats of Fusion and Vaporization, Vapor Pressure, Entropy, Heat of Formation and Thermodynamic Functions1

1952 ◽  
Vol 74 (18) ◽  
pp. 4656-4662 ◽  
Author(s):  
D. W. Scott ◽  
H. L. Finke ◽  
W. N. Hubbard ◽  
J. P. McCullough ◽  
G. D. Oliver ◽  
...  
Keyword(s):  
Heat Capacity ◽  
Vapor Pressure ◽  
Heat Of Formation

Heat Capacity, Entropy, and Free Energy of Rubber Hydrocarbon

1936 ◽  
Vol 9 (2) ◽  
pp. 264-274 ◽  
Author(s):  
Norman Bekkedahl ◽  
Harry Matheson
Keyword(s):  
Heat Capacity ◽  
Free Energy ◽  
Heat Of Formation ◽  
The Third ◽  
Free Energy Of Formation ◽  
Third Law Of Thermodynamics ◽  
Third Law ◽  
Lower Temperature ◽  
Energy Of Formation

Abstract The best method for obtaining the free energy of formation of rubber is by making use of the third law of thermodynamics. This makes necessary the determination of heat-capacity values of rubber from room temperature down to temperatures sufficiently low to apply an empirical formula for obtaining the values below this lower temperature. From these heat-capacity values the entropy may be obtained. Then from this latter value, along with the entropy values of carbon (graphite) and gaseous hydrogen and the heat of formation of rubber, a reliable value for the free energy of formation of rubber may be calculated. Several investigators have previously determined the heat capacities of rubber, but their observations were not made at temperatures sufficiently low to permit accurate extrapolation to the absolute zero in order to apply the third law. Furthermore, in the previous work the possibility that rubber at low temperatures might exist either as a metastable amorphous form or as a crystalline form was not clearly recognized. In the present investigation the aim was not only to extend the temperature range but also to obtain data of a higher order of accuracy than that previously reported.

Equilibrium geometry, vibrational frequencies, and heat of formation of HOBr, HBrO2, and HBrO3 isomers

2001 ◽  
Vol 79 (7) ◽  
pp. 1135-1144 ◽  
Author(s):  
Cristina Maria P Santos ◽  
Roberto B Faria ◽  
Juan O Machuca-Herrera ◽  
Sérgio de P Machado
Keyword(s):  
Heat Capacity ◽  
Heat Of Formation ◽  
Vibrational Frequencies ◽  
Basis Sets ◽  
Equilibrium Geometry ◽  
Dft Methods ◽  
Experimental Values ◽  
Equilibrium Geometries ◽  
Extended Basis ◽  
Ab Initio And Dft

The equilibrium geometries, vibrational frequencies, heat capacity, and heat of formation for compounds of general formula HBrOx were calculated by DFT (BP and pBP methods) with DN* and DN** numerical basis sets. The comparison of our HOBr calculated results with the HOBr experimental values points out that the BP and pBP methods are as good as other ab initio and DFT methods related in the literature employing extended basis sets. The calculated HBrOx total energy and heat of formation values, at 0 and 298.15 K, present the following order: HOBr < HBrO; HOOBr < HOBrO < HBrO2; HOOOBr < HOBrO2 < HOOBrO < HBrO3. The HBrOx heat of formation was calculated using isodesmic and homodesmic reactions and the results show that, in general, the use of these reactions gives similar results.Key words: HOBr, HBrO2, HBrO3, DFT, numerical basis.

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