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Acoustical and compressibility parameters of glycylglycine − FeCl3 in aqueous ethanol mixture at T = (293.15, 303.15, and 313.15) K / M. S. Santosh in Industrial & engineering chemistry research, Vol. 49 N° 22 (Novembre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 22 (Novembre 2010) . - pp. 11848-11853 Titre : Acoustical and compressibility parameters of glycylglycine − FeCl3 in aqueous ethanol mixture at T = (293.15, 303.15, and 313.15) K Type de document : texte imprimé Auteurs : M. S. Santosh, Auteur ; D. Krishna Bhat, Auteur Année de publication : 2011 Article en page(s) : pp. 11848-11853 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Compressibility Résumé : Ultrasonic velocity measurement is a reliable procedure that allows quick and easy determination of solvent concentrations in mixtures. This paper presents data of ultrasonic velocities and isentropic compressibilities of (glycylglcyine-FeCl3) in aqueous ethanol mixture at T= (293.15, 303.15, and 313.15) K. Various acoustical parameters were calculated, because of their importance in the study of specific molecular interactions. A less-compressible phase of the fluid and a closer packing of molecules is observed with changes in the intermolecular free length. Quantitative investigation suggests that the mixing of ethanol with an aqueous glycylglycine-FeCl3 solution causes the rupture of hydrogen bonds, with increasing δκS and Lf values (where the former represents the change in isentropic compressibility and the latter represents the intermolecular free length). Theoretically computed values of isentropic compressibility in the studied mixture using different models indicate the superiority of the very complex procedure. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23437889 [article] Acoustical and compressibility parameters of glycylglycine − FeCl3 in aqueous ethanol mixture at T = (293.15, 303.15, and 313.15) K [texte imprimé] / M. S. Santosh, Auteur ; D. Krishna Bhat, Auteur . - 2011 . - pp. 11848-11853. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 22 (Novembre 2010) . - pp. 11848-11853 Mots-clés : Compressibility Résumé : Ultrasonic velocity measurement is a reliable procedure that allows quick and easy determination of solvent concentrations in mixtures. This paper presents data of ultrasonic velocities and isentropic compressibilities of (glycylglcyine-FeCl3) in aqueous ethanol mixture at T= (293.15, 303.15, and 313.15) K. Various acoustical parameters were calculated, because of their importance in the study of specific molecular interactions. A less-compressible phase of the fluid and a closer packing of molecules is observed with changes in the intermolecular free length. Quantitative investigation suggests that the mixing of ethanol with an aqueous glycylglycine-FeCl3 solution causes the rupture of hydrogen bonds, with increasing δκS and Lf values (where the former represents the change in isentropic compressibility and the latter represents the intermolecular free length). Theoretically computed values of isentropic compressibility in the studied mixture using different models indicate the superiority of the very complex procedure. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23437889