Temperature and Concentration Dependence of Apparent Molar Volumes and Viscosities of NaCl, NH4Cl, CuCl2, CuSO4, and MgSO4in Pure Water and Water + Urea Mixtures

2004 ◽  
Vol 49 (1) ◽  
pp. 94-98 ◽  
Author(s):  
M. A. Motin
Keyword(s):  
Concentration Dependence ◽  
Pure Water ◽  
Apparent Molar Volumes ◽  
Molar Volumes

Apparent molar volumes of glycine, L-alanine, and L-serine in water + ethanol mixtures at 298.15 K

1999 ◽  
Vol 77 (3) ◽  
pp. 387-390 ◽  
Author(s):  
Xiaoling Ren ◽  
Ruisen Lin ◽  
Yaming Ni ◽  
Hanxing Zong
Keyword(s):  
Amino Acids ◽  
Hydrophobic Interactions ◽  
Pure Water ◽  
Apparent Molar Volumes ◽  
Molar Volumes ◽  
Transfer Volumes ◽  
Structure Breaking

Densities of glycine, L-alanine, and L-serine have been measured with an oscillating-tube densimeter at 298.15 K in water + ethanol (EtOH) mixtures ranging from pure water to 45% ethanol by mass. From these densities, apparent molar volumes and limiting apparent molar volumes of the three amino acids in the mixtures have been calculated. Transfer volumes are interpreted in terms of the structure-making or structure-breaking effects of water on addition of these amino acids in the mixtures. The relative contributions of hydrophilic and hydrophobic interactions in these solutions have been inferred.Key words: glycine, L-alanine, L-serine, water + ethanol mixtures, densities.

Calculation of the density of aqueous solutions of strong electrolytes from individual ionic parameters

1983 ◽  
Vol 48 (6) ◽  
pp. 1538-1551 ◽  
Author(s):  
Jiří Čeleda
Keyword(s):  
Experimental Data ◽  
Aqueous Solutions ◽  
Concentration Dependence ◽  
Volume Concentration ◽  
Apparent Molar Volumes ◽  
Aqueous Electrolytes ◽  
Molar Volumes ◽  
Strong Electrolytes

Based on a hypothesis verified earlier, according to which the concentration dependence of apparent molar volumes of ions in aqueous solutions is caused by their dehydration due to the decrease of the volume concentration of water, a method for the calculation of the density of concentrated aqueous electrolytes from individual ionic constants is proposed. The theory is verified by comparing with experimental data from the literature (420 solutions of 57 electrolytes).

Apparent molar volumes and enthalpies of solution of tetracyanoethylene in some solvents and of butan-1-ol in n-octane at different concentrations

2000 ◽  
Vol 10 (2) ◽  
pp. 49-51 ◽  
Author(s):  
Vladimir D. Kiselev ◽  
Elena A. Kashaeva ◽  
Mahdy S. Shihaab ◽  
Alexander I. Konovalov
Keyword(s):  
Apparent Molar Volumes ◽  
Enthalpies Of Solution ◽  
Molar Volumes
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