The equations of state and the thermodynamic properties of inert gases in the interval from the normal boiling point to 1300°k at pressures below 1000 bar

1969 ◽  
Vol 16 (3) ◽  
pp. 352-356
Author(s):  
M. P. Vulkalovich ◽  
V. V. Altunin ◽  
G. A. Spiridonov
Keyword(s):  
Thermodynamic Properties ◽  
Boiling Point ◽  
Equations Of State ◽  
Inert Gases ◽  
Normal Boiling Point

Some Thermodynamic Properties of Pure and Impure Nitrogen

1974 ◽  
Vol 52 (16) ◽  
pp. 1521-1531 ◽  
Author(s):  
J. Ancsin
Keyword(s):  
Thermodynamic Properties ◽  
Triple Point ◽  
Boiling Point ◽  
Normal Boiling Point ◽  
Vapor Pressures ◽  
Freezing Points ◽  
Boiling Points ◽  
Triple Points

Boiling points, freezing points, and vapor pressures (from 56 K to the normal boiling point) for pure and various doped N2 samples have been measured. The normal boiling points for N2 and N2 doped with 100 v.p.p.m. of O2, Ar, Kr, and CO impurities were found to be 77.3439 K, 77.3458 K, 77.3452 K, 77.3454 K, and 77.3444 K respectively. The triple points of the same samples are 63.14635 K, 63.1445 K, 63.14575 K, 63.1487 K, and 63.14675 K respectively. The values obtained for the heats of sublimation, vaporization, and fusion at the triple point of pure N2 were 6773.8, 6049.6, and 724.3 J/mole respectively and the above impurities changed these quantities by the amounts given in Tables 5 and 6.

scholarly journals A Re-assessment of the Thermodynamic Properties of Osmium

2020 ◽  
Author(s):  
John W. Arblaster
Keyword(s):  
Liquid Phase ◽  
Thermodynamic Properties ◽  
Boiling Point ◽  
Enthalpy Of Fusion ◽  
Enthalpy Of Sublimation ◽  
Normal Boiling Point ◽  
Atmosphere Pressure

The thermodynamic properties were reviewed by the author in 1995. A new assessment of the enthalpy of fusion at 68.0 ± 1.7 kJ mol-1 leads to a revision of the thermodynamic properties of the liquid phase and although the enthalpy of sublimation at 298.15 K is retained as 788 ± 4 kJ mol-1 the normal boiling point is revised to 5565 K at one atmosphere pressure.

The Realization of the Normal Boiling Point of Neon

Metrologia ◽  
1978 ◽  
Vol 14 (1) ◽  
pp. 9-13 ◽  
Author(s):  
R C Kemp ◽  
W R G Kemp
Keyword(s):  
Boiling Point ◽  
Normal Boiling Point

FIRST-PRINCIPLES HIGH-PRESSURE ELASTIC AND THERMODYNAMIC PROPERTIES OF TANTALUM

2011 ◽  
Vol 25 (10) ◽  
pp. 1393-1407 ◽  
Author(s):  
JING-HE WU ◽  
XIAN-LIN ZHAO ◽  
YOU-LIN SONG ◽  
GUO-DONG WU
Keyword(s):  
Thermodynamic Properties ◽  
Elastic Constants ◽  
First Principles ◽  
Equations Of State ◽  
Debye Model ◽  
Thermal Expansivity ◽  
Orbital Method ◽  
Full Potential ◽  
Body Centered Cubic ◽  
Theoretical Results

The all-electron full-potential linearized muffin-tin orbital method, by means of quasi-harmonic Debye model, is applied to investigate the elastic constant and thermodynamic properties of body-centered-cubic tantalum (bcc Ta). The calculated elastic constants of bcc Ta at 0 K is consistent with the previous experimental and theoretical results. Our calculations give the correct trends for the pressure dependence of elastic constants. By using the convenient quasi-harmonic Debye model, we refined the thermal equations of state. The thermal expansivity and some other thermal properties agree well with the previous experimental and theoretical results.

scholarly journals Anharmonic Self-Consistent Theory of Crystals. II. The 2d and 3d Quartic Crystal Models

1994 ◽  
Vol 49 (6) ◽  
pp. 663-670
Author(s):  
S. Sh. Soulayman ◽  
C. Ch. Marti ◽  
Ch. Ch. Guilpin
Keyword(s):  
Helmholtz Free Energy ◽  
Equations Of State ◽  
Three Dimensional ◽  
Inert Gases ◽  
Thermoelastic Properties ◽  
Consistent Theory ◽  
Jones Potential ◽  
Lennard Jones ◽  
2D And 3D ◽  
Strong Anharmonicity

Abstract In this paper we apply the method developed in part I for describing the crystalline state of two and three dimensional inert gases. For strong anharmonicity of fourth order, the equations of state of these gases are obtained. This way we calculate the thermoelastic properties of two and three dimensional argon, krypton and xenon using the Lennard-Jones potential. The corrections to the Helmholtz free energy and thermodynamic properties due to quantum effects are considered. The results are compared with the available experimental data.

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