Thermodynamic Properties of Octafluoropropane from 14°K to Its Normal Boiling Point. An Estimate of the Barrier to Internal Rotation from the Entropy and Heat Capacity of the Gas

1967 ◽  
Vol 47 (1) ◽  
pp. 38-43 ◽  
Author(s):  
E. L. Pace ◽  
A. C. Plaush
Keyword(s):  
Heat Capacity ◽  
Thermodynamic Properties ◽  
Internal Rotation ◽  
Boiling Point ◽  
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 Evaluation of material property estimating methods for n-alkanes, 1-alcohols, and methyl esters for droplet evaporation calculations

2021 ◽  
Author(s):  
Dávid Csemány ◽  
István Gujás ◽  
Cheng Tung Chong ◽  
Viktor Józsa
Keyword(s):  
Heat Capacity ◽  
Liquid Phase ◽  
Specific Heat ◽  
Specific Heat Capacity ◽  
Vapor Phase ◽  
Material Properties ◽  
Boiling Point ◽  
Methyl Esters ◽  
Normal Boiling Point ◽  
Proper Estimation

AbstractModeling of heat and mass transfer in liquid fuel combustion requires several material properties in a wide temperature and pressure range. The unavailable data are commonly patched with various estimation methods. In this paper, group contribution methods (GCM) and law of corresponding states (LCS) were analyzed for estimating material properties of n-alkanes (up to C10H22 and C12H26), 1-alcohols (up to C10H22O), and methyl esters (up to C19H38O2 and C19H36O2). These were compared to reference data to evaluate their applicability. LCS suggested by Poling et al. provides proper estimation for the acentric factor. GCM of Joback accurately estimates normal boiling point, critical properties, and specific heat capacity of the vapor-phase, the latter was corrected for methanol, however, GCM of Constantinou is more accurate for critical pressure of methyl esters. GCM of Ruzicka is suitable for estimating liquid-phase specific heat capacity. This method was updated for methanol. GCM of Elbro gives a proper estimation for liquid-phase density, while LCS of Lucas estimates vapor-phase viscosity properly. LCS of Chung and the modified Eucken method for vapor-phase and GCM of Sastri for liquid-phase thermal conductivity are appropriate. Considering the gas-phase mutual diffusion coefficient, the method of Fuller provides the best estimation, while LCS methods of Riedel and Chen are suitable for the enthalpy of vaporization at the normal boiling point.

scholarly journals Prediction of Standard Heat Capacity and Entropy of Inorganic XY3, XY4 and XY5 Gases at 25 degrees C Based on Correlation with the Normal Boiling Point.

1989 ◽  
Vol 43 ◽  
pp. 758-762 ◽  
Author(s):  
Reidar Stølevik ◽  
I. G. Krogh Andersen ◽  
G. Ploug-Sørensen ◽  
Ewa Huskowska ◽  
Mauri Lounasmaa ◽  
...  
Keyword(s):  
Heat Capacity ◽  
Boiling Point ◽  
Normal Boiling Point ◽  
Standard Heat ◽  
Standard Heat Capacity

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
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