Densities, Partial Molar Volumes, and Heat Capacities of Glycine,l-Alanine, andl-Leucine in Aqueous Magnesium Chloride Solutions at Different Temperatures

2004 ◽  
Vol 49 (3) ◽  
pp. 553-565 ◽  
Author(s):  
Bhajan S. Lark ◽  
Poonam Patyar ◽  
Tarlok S. Banipal ◽  
Nand Kishore
Keyword(s):  
Magnesium Chloride ◽  
Partial Molar Volumes ◽  
Heat Capacities ◽  
Chloride Solutions ◽  
Molar Volumes ◽  
Different Temperatures

scholarly journals Study of Thermodynamic and Transport Properties of Glycine, Diglycine, and Triglycine in Aqueous Tartrazine at Different Temperatures

2009 ◽  
Vol 64 (11) ◽  
pp. 758-764 ◽  
Author(s):  
Anwar Ali ◽  
Rajan Patel ◽  
Shahjahan Khan ◽  
Vidiksha Bhushan
Keyword(s):  
Viscous Flow ◽  
Activation Parameters ◽  
Partial Molar Volumes ◽  
Molar Refraction ◽  
Viscosity Data ◽  
Molar Volumes ◽  
Viscosity Coefficients ◽  
Different Temperatures ◽  
Refractive Index Data ◽  
Amino Acid Glycine

The densities (ρ), viscosities (η), and refractive indices (nD) of (0.01, 0.05, 0.10, 0.15, and 0.20 m) amino acid, glycine, and peptides, diglycine and triglycine in 0.01 m aqueous tartrazine solution were determined at 288.15, 293.15, 298.15, 303.15, 308.15, and 313.15 K. The density data were utilized to evaluate apparent molar volumes (φv) which, in turn, were used to determine partial molar volumes (φv ◦) using Masson’s equation. The transfer volumes were also calculated. The viscosity data were analyzed using the Jones-Dole equation to determine the viscosity coefficients and the activation parameters. The activation parameters of viscous flow were obtained to throw light on the mechanism of viscous flow. The molar refraction was calculated using the refractive index data. The results were interpreted in the light of ion-ion, ion-nonpolar, and nonpolar-nonpolar interactions and the effect of increasing hydrophobicity as we move from glycine to triglycine on these interactions in presence of the dye tartrazine was also investigated.

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