Thermodynamic properties of the ethylammonium nitrate + water system: Partial molar volumes, heat capacities, and expansivities

1985 ◽  
Vol 14 (8) ◽  
pp. 549-560 ◽  
Author(s):  
Martin Allen ◽  
D. Fennell Evans ◽  
Rufus Lumry
Keyword(s):  
Thermodynamic Properties ◽  
Water System ◽  
Partial Molar Volumes ◽  
Heat Capacities ◽  
Molar Volumes ◽  
Ethylammonium Nitrate

Thermodynamic properties of (ethan-1,2-diol + water) at the temperature 298.15 K I. Molar volumes, isobaric molar heat capacities, ultrasonic speeds, and isentropic functions

1991 ◽  
Vol 23 (6) ◽  
pp. 569-580 ◽  
Author(s):  
Gerard Douheret ◽  
Amalendu Pal ◽  
Harald Høiland ◽  
Ogugua Anowi ◽  
Michael I. Davis
Keyword(s):  
Thermodynamic Properties ◽  
Heat Capacities ◽  
Molar Volumes

Densities and apparent molar volumes of aqueous aluminum chloride. Analysis of apparent molar volumes and heat capacities of aqueous aluminum salts in terms of the Pitzer and Helgeson theoretical models

1986 ◽  
Vol 64 (2) ◽  
pp. 353-359 ◽  
Author(s):  
Leslie Barta ◽  
Loren G. Hepler
Keyword(s):  
Aqueous Solutions ◽  
Interaction Model ◽  
Partial Molar Volumes ◽  
Theoretical Models ◽  
Heat Capacities ◽  
Apparent Molar Volumes ◽  
Standard State ◽  
Apparent Molar Heat Capacities ◽  
Molar Volumes ◽  
Aqueous Aluminum

Densities of aqueous solutions of AlCl3 (containing dilute HCl) have been measured at 10, 25, 40, and 55 °C with results that have led to defined apparent molar volumes. We have used the Pitzer ion interaction model as the basis for analyzing these apparent molar volumes to obtain standard state (infinite dilution) partial molar volumes of AlCl3(aq) at each temperature. We have also made similar use of apparent molar heat capacities of aqueous solutions of AlCl3–HCl and Al(NO3)3–HNO3 from Hovey and Tremaine to obtain standard state partial molar heat capacities of AlCl3(aq) and Al(NO3)3(aq) at these same temperatures. Finally, the standard state partial molar volumes and heat capacities have been used with the Helgeson–Kirkham semi-theoretical equation of state for aqueous ions to provide a basis for estimating the thermodynamic properties of Al3+(aq) at high temperatures and pressures.

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.

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