Vapor Pressure Measurements of Chloric Acid and Chloric Acid + Sodium Chlorate Aqueous Solutions

1997 ◽  
Vol 42 (2) ◽  
pp. 304-309
Author(s):  
Brian R. Crump ◽  
M. Fazlul Hoq ◽  
Bhart Indu ◽  
William R. Ernst
Keyword(s):  
Vapor Pressure ◽  
Aqueous Solutions ◽  
Sodium Chlorate ◽  
Chloric Acid ◽  
Pressure Measurements ◽  
Vapor Pressure Measurements

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.

scholarly journals Water Activity

2012 ◽  
Vol 27 ◽  
pp. 565-569 ◽  
Author(s):  
O. F. Nielsen ◽  
M. Bilde ◽  
M. Frosch
Keyword(s):  
Surface Tension ◽  
Vapor Pressure ◽  
Aqueous Solutions ◽  
Vapour Pressure ◽  
Pure Water ◽  
Free Water ◽  
Water Molecules ◽  
Pressure Measurements ◽  
Metabolic Activities ◽  
Vapor Pressure Measurements

Microorganisms require water for their metabolic activities. Only a fraction of water in foodstuffs, the so-called free water, is available for this purpose. The amounts of free water previously estimated by two different methods (Frosch et al. (2010), Frosch et al. (2011), and Low (1969)) are compared for aqueous solutions of four electrolytes, NaCl, NH4Cl, Na2SO4, (NH4)2SO4: (i) vapour pressure measurements of the solutions relative to that of pure water (water activities) and (ii) low-wavenumber Raman spectra in the R(ν)-representation. For each electrolyte deviations were found between results from the two methods. All water molecules in the illuminated volume contribute to the Raman data. The vapor pressure measurements refer to water molecules at the water/atmosphere interface where surface tension is important. Differences in surface tension for the four electrolytes qualitatively explain deviations between the amounts of “free water” observed by the two methods.

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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