✦ LIBER ✦

Viscometric and volumetric studies of some amino acids in binary aqueous solutions of urea at various temperatures

✍ Scribed by Amalendu Pal; Suresh Kumar

Publisher: Elsevier Science
Year: 2004
Tongue: English
Weight: 174 KB
Volume: 109
Category: Article
ISSN: 0167-7322
DOI: 10.1016/j.molliq.2003.07.003

No coin nor oath required. For personal study only.

✦ Synopsis

The viscosities and densities of L-glycine, L-alanine and L-valine have been measured at 288.15, 298.15, 308.15 and 318.15 K in aqueous urea solutions ranging from 5 to 25% urea by mass. The viscosity data have been analysed by using Jones-Dole equation. The activation parameters of viscous flow have been obtained to throw light on the mechanism of viscous flow. The values of apparent molar volume, limiting apparent molar volume and relative viscosity have been evaluated from the density and viscosity data. Transfer volumes and the infinite dilution partial molar expansibilities have been calculated from the temperature dependence of the limiting apparent molar volumes. The results were interpreted in the light of ion-ion and ion-solvent interactions and of structural effects of the solutes in solutions.

📜 SIMILAR VOLUMES

Volumetric and ultrasonic studies of som

Volumetric and ultrasonic studies of some amino acids in binary aqueous solutions of MgCl2·6H2O at 298.15 K

✍ Amalendu Pal; Suresh Kumar 📂 Article 📅 2005 🏛 Elsevier Science 🌐 English ⚖ 188 KB

Apparent molar volumes (V / ) and adiabatic compressibilities (K /,s ) of glycine, l-alanine and l-valine in binary aqueous solutions of MgCl 2 d 6H 2 O (0.1-0.8 mol kg À1 ) have been determined at 298.15 K from precise density and sound speed measurements. Partial molar volumes (V / 0 ) and partial

Volumetric, viscometric, and acoustic be

Volumetric, viscometric, and acoustic behaviour of diglycine in aqueous saccharide solutions at different temperatures

✍ Amalendu Pal; Nalin Chauhan 📂 Article 📅 2009 🏛 Elsevier Science 🌐 English ⚖ 222 KB

Volumetric, ultrasonic and viscometric b

Volumetric, ultrasonic and viscometric behavior of l-methionine in aqueous-glucose solutions at different temperatures

✍ Anil Kumar Nain; Monika Lather; Rakesh Kumar Sharma 📂 Article 📅 2011 🏛 Elsevier Science 🌐 English ⚖ 586 KB

Densities, ρ, ultrasonic speeds, u, and viscosities, η, of aqueous-glucose (2.5, 5, 10, 15 and 20% of glucose, w/w in water) and of solutions of L-methionine in four aqueous-glucose solvents were measured at 293.15, 298.15, 303.15, 308.15, 313.15, and 318.15 K. From these experimental data, apparent

Viscometric and volumetric study of dilu

Viscometric and volumetric study of dilute aqueous solutions of binary and ternary poly(ethylene glycol)/poly(vinyl alcohol) systems at different temperatures

✍ Alireza Salabat; Abbas Mehrdad 📂 Article 📅 2010 🏛 Elsevier Science 🌐 English ⚖ 187 KB

## Poly (vinyl alcohol) Viscosity of polymer mixtures Density of polymer mixtures Densities and viscosities of binary and ternary systems of poly(ethylene glycol) (PEG) + H 2 O, poly(vinyl alcohol) (PVA) + H 2 O and PVA + PEG + H 2 O in the concentration range of 0.5-5 wt.% at different temperatur

Apparent molar volumes of some amino aci

Apparent molar volumes of some amino acids and peptides in aqueous urea solutions

✍ A. K. Mishra; K. P. Prasad; J. C. Ahluwalia 📂 Article 📅 1983 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 592 KB

Densities of solutions of several a-amino acids and peptides in 3 and 6m aqueous urea solvents have been determined at 298.15 K. These data have been used to evaluate the infinite-dilution apparent molar volumes of the solutes and the volume changes due to transfer (7;) of the a-amino acids and pept

Aqueous solutions containing amino acids

Aqueous solutions containing amino acids and peptides. Part 20. Volumetric behavior of some terminally substituted amino acids and peptides at 298.15 K

✍ Tracy E. Leslie; Terence H. Lilley 📂 Article 📅 1985 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 714 KB

The densities at 298.15 K of aqueous solutions containing some terminally substituted amino acids and peptides containing the glycyl, L-and Dalanyl, I.-valyl, cleucyl, sarcosyl, and L-prolyl residues have been determined and standard state partial molar volumes and volumetric pairwise virial ,coeffi