THE VAPOR PRESSURE, HEAT OF VAPORIZATION AND HEAT CAPACITY OF METHANE FROM THE BOILING POINT TO THE CRITICAL TEMPERATURE

1961 ◽  
Vol 65 (2) ◽  
pp. 362-365 ◽  
Author(s):  
P. Hestermans ◽  
David White
Keyword(s):  
Heat Capacity ◽  
Critical Temperature ◽  
Vapor Pressure ◽  
Boiling Point ◽  
Heat Of Vaporization

Estimation of heats of vaporization for non associating organic liquids from the boiling points at various pressures

1986 ◽  
Vol 64 (4) ◽  
pp. 635-640 ◽  
Author(s):  
J. Peter Guthrie
Keyword(s):  
Heat Capacity ◽  
Vapor Pressure ◽  
Boiling Point ◽  
Room Temperature ◽  
Quadratic Function ◽  
Organic Liquids ◽  
Heat Of Vaporization ◽  
Boiling Points ◽  
Temperature And Pressure ◽  
Heats Of Vaporization

At any pressure the heat of vaporization can be expressed as a quadratic function of the boiling point at that pressure. A seven parameter equation expressing the simultaneous dependence on boiling point and pressure can be fitted to the data; six pressures from 1 to 760 Torr (1 Torr = 133.3 Pa) were used. ΔHvap = b11 + b12 In (p) + b13p + (b21 + b22 In (p))tbp + (b31 + b32 In (p))tbp2. This relationship served as a guide for developing a relationship between vapour pressure at 25 °C and the calorimetric heat of vaporization, and also a relationship between vapor pressure at 25 °C and the boiling point at some other pressure. Parameters for both these relationships could be derived from the parameters obtained for ΔHvap as a function of temperature and pressure. A third method was developed starting from an equation for vapor pressure and fitting to the heat of vaporization, the heat capacity of vaporization, and at least one t,p point. These methods allow the estimation of the vapor pressure at room temperature from very meager data. The problems of errors in estimated values are discussed.

2,3-Dithiabutane: Low Temperature Heat Capacity, Heat of Fusion, Heat of Vaporization, Vapor Pressure, Entropy and Thermodynamic Functions1,2

1950 ◽  
Vol 72 (6) ◽  
pp. 2424-2430 ◽  
Author(s):  
D. W. Scott ◽  
H. L. Finke ◽  
M. E. Gross ◽  
G. B. Guthrie ◽  
H. M. Huffman
Keyword(s):  
Heat Capacity ◽  
Low Temperature ◽  
Vapor Pressure ◽  
Heat Of Fusion ◽  
Heat Of Vaporization ◽  
Temperature Heat ◽  
Low Temperature Heat Capacity

Prediction of the Vapor Pressure Boiling Point, Heat of Vaporization and Diffusion Coefficient of Organic Compounds

2003 ◽  
Vol 22 (6) ◽  
pp. 565-574 ◽  
Author(s):  
S.?H. Hilal ◽  
S.?W. Karickhoff ◽  
L.?A. Carreira
Keyword(s):  
Diffusion Coefficient ◽  
Vapor Pressure ◽  
Organic Compounds ◽  
Boiling Point ◽  
Heat Of Vaporization ◽  
And Diffusion

THE VAPOR PRESSURE OF VINYL ACETATE

1933 ◽  
Vol 9 (5) ◽  
pp. 419-423 ◽  
Author(s):  
J. Marsden ◽  
A. C. Cuthbertson
Keyword(s):  
Critical Temperature ◽  
Vapor Pressure ◽  
Vinyl Acetate ◽  
Boiling Point ◽  
Normal Boiling Point ◽  
Temperature Range ◽  
Heat Of Evaporation

This paper presents the results of the measurement of the vapor pressure of vinyl acetate, over the temperature range from 0 °C. to the normal boiling point. The determinations were carried out on vacuum distilled samples with an isoteniscope, differing slightly in detail from that used by Smith and Menzies(7).The normal boiling point is 72.5 °C. The molecular heat of evaporation has been found to be 8211 calories. The equation which represents the results is[Formula: see text]Trouton's constant and the critical temperature have been found to be 23.8 and 228.3 °C.

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