The Liquid Density, Vapor Pressure and Critical Temperature and Pressure of Perchloryl Fluoride

1957 ◽  
Vol 61 (4) ◽  
pp. 498-499 ◽  
Author(s):  
Roger L. Jarry
Keyword(s):  
Critical Temperature ◽  
Vapor Pressure ◽  
Liquid Density ◽  
Perchloryl Fluoride ◽  
Temperature And Pressure

Vapor-Phase Thermal Conductivity, Vapor Pressure, and Liquid Density of R365mfc

2002 ◽  
Vol 47 (3) ◽  
pp. 554-558 ◽  
Author(s):  
Isabel M. Marrucho ◽  
Nelson S. Oliveira ◽  
Ralf Dohrn
Keyword(s):  
Thermal Conductivity ◽  
Vapor Pressure ◽  
Vapor Phase ◽  
Liquid Density

Low energy electron ranges in liquids: determination by nonhomogeneous kinetics

1977 ◽  
Vol 55 (11) ◽  
pp. 2050-2062 ◽  
Author(s):  
J.-P. Dodelet
Keyword(s):  
Critical Temperature ◽  
Melting Point ◽  
Distribution Functions ◽  
Liquid Density ◽  
Range Distribution ◽  
Total Ionization ◽  
Free Ion ◽  
Drastic Increase ◽  
Pass Through ◽  
Ion Yields

Free ion yields have been measured in four hydrocarbon liquids: n-pentane, cyclopentane, neopentane, and neohexane. Each liquid has been studied from room temperature or below up to the critical temperature. Theoretical curves have been calculated using the relation between the free ion yields and the external field strength derived by Terlecki and Fiutak on the basis of an equation by Onsager. Two popular electron range distribution functions, Gaussian and exponential, have been shown not to be an adequate representation of the reality as far as the model used for the calculations is concerned. In order to fit experimental points, both range distribution functions would require a drastic increase in the total ionization yield, Gtot, with temperature increase. This would mean an unrealistic decrease of the ionization potential of the molecule from the melting point up to the critical temperature.It is possible to keep Gtot quite constant and within the range of values obtained by other techniques by extending the Gaussian range distribution function with a (range)−3 probability tail. The most probable range can be normalized for the liquid density. This parameter has been used to obtain information about the behaviour of epithermal electrons in the four alkane liquids from the melting point up to the critical temperature.(1) Normalized penetration ranges of epithermal electrons are dependent on the structure of the molecule in the entire liquid range but differences are smaller at critical than at low temperatures.(2) Normalized penetration ranges of epithermal electrons pass through a maximum in the liquid phase for neopentane, neohexane, and cyclopentane. No maximum is observed for n-pentane.(3) There is no drastic change in the behaviour of epithermal electrons in these alkanes at the critical temperature.

Vapor pressure of liquid argon, krypton, and xenon

1969 ◽  
Vol 47 (3) ◽  
pp. 267-273 ◽  
Author(s):  
D. H. Bowman ◽  
Ronald A. Aziz ◽  
C. C. Lim
Keyword(s):  
Experimental Data ◽  
Regression Analysis ◽  
Critical Temperature ◽  
Vapor Pressure ◽  
Liquid Argon ◽  
Quantum Corrections ◽  
Functional Relations ◽  
Potential Parameters ◽  
Corresponding States Principle ◽  
Pressure Analysis

The vapor pressure of liquid argon, krypton, and xenon was measured from below the normal boiling temperature to close to the critical temperature. Functional relations were fitted by a multiple regression analysis to the experimental data. Data of other authors are compared directly with the results presented here.Comparison of the vapor pressure curves for the three liquids showed that the classical corresponding states principle was obeyed only poorly and that it was necessary to include quantum corrections in comparing the reduced curves. The adjusted reduction factors agreed reasonably well with those found from vapor pressure analysis by other workers. De Boer plots on the basis of our potential parameters are more linear than those using the parameters of Boato and Casanova.

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