Thermodynamic properties of aqueous-organic systems with low water contents. 2. Limiting partial molar volumes of D2O and H2O intert-butyl alcohol and 1,4-dioxane at 288.15?318.15 K

1992 ◽  
Vol 41 (3) ◽  
pp. 448-450 ◽  
Author(s):  
V. I. Grasin ◽  
V. K. Abrosimov
Keyword(s):  
Thermodynamic Properties ◽  
Partial Molar Volumes ◽  
Butyl Alcohol ◽  
Molar Volumes ◽  
Organic Systems ◽  
Water Contents

scholarly journals Investigation of the thermodynamic properties of the binary system vitamin K3/carbon dioxide

2017 ◽  
Vol 23 (4) ◽  
pp. 563-571
Author(s):  
Nina Trupej ◽  
Masa Knez-Hrncic ◽  
Mojca Skerget ◽  
Zeljko Knez
Keyword(s):  
Carbon Dioxide ◽  
Binary System ◽  
Thermodynamic Properties ◽  
Partial Molar Volumes ◽  
Analytic Method ◽  
Vitamin K3 ◽  
Molar Volumes ◽  
Vibrating Tube Densimeter ◽  
A Minor

The binary system of vitamin K3 and CO2 was investigated at temperatures of 40, 60 and 80 ?C up to a pressure of 40 MPa. Solubility was measured by a static-analytic method. Partial molar volumes were determined by a method involving a vibrating tube densimeter. The solubility of vitamin K3 in CO2 is found as a function of pressure and temperature. The highest solubility (31.16?10-4 mol?mol-1) was attained at a pressure of 25.40 MPa at temperature of 40?C. However, at temperature of 60?C and a pressure of 24.02 MPa, the solubility was 18.79?10-4 mol?mol-1. Solubility was lower at a temperature of 80?C and a pressure of 22.06 MPa (6.48?10-4 mol?mol-1). The partial molar volumes are negative and the dissolved vitamin K3 has a minor impact on the density of the solution of K3 in CO2 compared to the density of the pure CO2.

Viscosity and tracer diffusion coefficients, and thermodynamic properties, for ethanol + acetonitrile mixtures at 298.15 K

1983 ◽  
Vol 36 (4) ◽  
pp. 665 ◽  
Author(s):  
AJ Easteal
Keyword(s):  
Experimental Data ◽  
Thermodynamic Properties ◽  
Diffusion Coefficients ◽  
Partial Molar Volumes ◽  
Tracer Diffusion ◽  
Complex Behaviour ◽  
Molar Volumes ◽  
Dipole Interactions ◽  
Tracer Diffusion Coefficients

Molar volumes and partial molar volumes, tracer diffusion coefficients (D), and shear viscosities (η) are reported for ethanol + acetonitrile mixtures at 298.15 K. The tracer diffusion coefficients vary non-additively with composition, and the product Dη for each component is composition-dependent. Albright's equation for viscosity reproduces experimental viscosities to within the combined uncertainties of the experimental data. The system exhibits considerably less complex behaviour than does the analogous water + acetonitrile system, and the properties are thought to be dominated by dipole-dipole interactions between unlike molecules.

Volumetric properties of (water + diethanolamine) systems

1995 ◽  
Vol 73 (9) ◽  
pp. 1514-1519 ◽  
Author(s):  
Yadollah Maham ◽  
Tjoon T. Teng ◽  
Alan E. Mather ◽  
Loren G. Hepler
Keyword(s):  
Thermal Expansion ◽  
Aqueous Solutions ◽  
Molecular Interactions ◽  
Full Range ◽  
Excess Molar Volumes ◽  
Partial Molar Volumes ◽  
Volumetric Properties ◽  
Molar Volumes ◽  
Organic Systems

Densities of completely miscible (water + methyldiethanolamine) and (water + ethyldiethanolamine) systems have been measured over the full range of compositions at temperatures from 25 to 80 °C. Results of these measurements have been used in calculating excess molar volumes and partial molar volumes of each component. We have also identified different measures of the thermal expansion of these systems and have calculated some of these derivative quantities. The partial molar volumes and their derivatives with respect to temperature provide a basis for extending our understanding of molecular interactions in these (water + organic) systems. Keywords: diethanolamines, excess molar volumes, partial molar volumes, expansivities, aqueous solutions.

Sign in / Sign up

Export Citation Format

Share Document