Optical measurements of vapor pressures of Rb and a Rb–K mixture

1982 ◽  
Vol 60 (10) ◽  
pp. 1496-1501 ◽  
Author(s):  
David C. Thompson ◽  
Gen-Xing Xu
Keyword(s):  
Vapor Pressure ◽  
Equivalent Width ◽  
Optical Measurements ◽  
Analytic Approximation ◽  
Pressure Measurements ◽  
Vapor Pressures ◽  
Pressure Data ◽  
Heats Of Mixing ◽  
Vapor Pressure Measurements ◽  
Existing Data

Vapor pressure measurements of Rb and of a Rb–K solution have been made by the equivalent width method in the 400–520 K temperature range. The pure Rb results agree well with existing data and the analytic approximation of Nesmyanov. For the Rb–K solution, the Rb partial pressure data agree well with expectations based on theoretical and experimental heats of mixing, but the data for K do not.

Activities from vapor pressure measurements of lithium and of sodium chlorates in water and water–dioxane solvents

1969 ◽  
Vol 47 (14) ◽  
pp. 2671-2680 ◽  
Author(s):  
A. N. Campbell ◽  
B. G. Oliver
Keyword(s):  
Vapor Pressure ◽  
Activity Coefficients ◽  
Sodium Chlorate ◽  
Differential Manometer ◽  
Pressure Measurements ◽  
Vapor Pressures ◽  
Hydration Numbers ◽  
Water Solutions ◽  
Experimental Activity ◽  
Vapor Pressure Measurements

The vapor pressures of solutions of sodium chlorate and of lithium chlorate in water and in solvents consisting of 44.5% dioxane–55.5% water and of 64.5% dioxane–35.5% water, at 25 °C, were determined using a differential manometer. The vapor compositions of the dioxane–water solutions were found by the air-saturation method.The mean molal activity coefficients were calculated from the vapor pressures and compositions. The activity coefficients of the solute were fitted to the theoretical equations of Stokes and Robinson and of Glueckauf, yielding hydration numbers for the cations of the salts.The minimum dioxanation numbers of sodium and of lithium chlorates in the dioxane–water mixtures were calculated from the experimental activity coefficients by the method of Grunwald. The results show that lithium chlorate is more highly solvated than sodium chlorate and that dioxane plays a major role in the solvation of both electrolytes in the dioxane–water mixtures.

PVT Measurements and Critical Parameters of Water

1983 ◽  
Vol 22 ◽  
Author(s):  
H. Hanafusa ◽  
K. Kawai ◽  
H. Sato ◽  
M. Uematsu ◽  
K. Watanabe
Keyword(s):  
Vapor Pressure ◽  
Scaling Law ◽  
Density Variation ◽  
Critical Parameters ◽  
Pressure Measurements ◽  
Vapor Pressures ◽  
Constant Temperature Bath ◽  
Pvt Properties ◽  
Pvt Measurements ◽  
Vapor Pressure Measurements

ABSTRACTThe PVT properties and vapor-pressures of water have been measured in the critical region by using a constantvolume apparatus immersed in the constant-temperature bath with the procedure of varying the sample mass along a prescribed isotherm. Ninety-one PVT and five vapor-pressure measurements along 11 isotherms cover the region of temperatures 643 to 673 K and of pressures 19.7 to 38.6 MPa, which corresponds to a density variation from 108 to 618 kg/m3. The experimental uncertainties of temperature, pressure and density are estimated 4 mK, 5 kPa and 0.04%, respectively. Based on these measurements, the critical parameters of water are proposed to be 647.061 K, 22.041 MPa and 322.4 kg/m3 by the scaling law analysis.

Rapid Vapor-Collection Method for Vapor Pressure Measurements of Low-Volatility Compounds

2020 ◽  
Vol 92 (24) ◽  
pp. 16253-16259
Author(s):  
Megan E. Harries ◽  
Cheryle N. Beuning ◽  
Bridger L. Johnston ◽  
Tara M. Lovestead ◽  
Jason A. Widegren
Keyword(s):  
Vapor Pressure ◽  
Pressure Measurements ◽  
Collection Method ◽  
Vapor Collection ◽  
Vapor Pressure Measurements

scholarly journals Application of a Micro-Flow Regulating Valve in Saturated Vapor Pressure Measurements

Daxue Huaxue ◽  
2021 ◽  
Vol 0 (0) ◽  
pp. 2107062-0
Author(s):  
Shuai Zhang ◽  
Jian Zhang ◽  
Shaowei Bian ◽  
Yaping Zhao ◽  
Li Shen ◽  
...  
Keyword(s):  
Vapor Pressure ◽  
Saturated Vapor Pressure ◽  
Saturated Vapor ◽  
Pressure Measurements ◽  
Micro Flow ◽  
Vapor Pressure Measurements

Vapor Pressure Measurements and Correlation for trans-1-Chloro-3,3,3-trifluoroprop-1-ene

2019 ◽  
Vol 64 (7) ◽  
pp. 2947-2954 ◽  
Author(s):  
Shuhao Li ◽  
Fufang Yang ◽  
Kai Zhang ◽  
Yuanyuan Duan ◽  
Zhen Yang
Keyword(s):  
Vapor Pressure ◽  
Pressure Measurements ◽  
Vapor Pressure Measurements
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