Volumetric, acoustic and viscometric behaviour of dipotassium hydrogen phosphate and disodium hydrogen phosphate in aqueous solution of N-acetyl glycine at different temperatures. (March 2016)

• Record Type: Journal Article
• Authors: Kumar, Harsh; Singla, Meenu; Mittal, Heena
• Is Part Of: Journal of chemical thermodynamics. Volume 94(2016:Mar.)
• Page Start: 204
• Page End: 220
• Publication Date: 2016-03
• Subjects: Apparent molar property -- Dipotassium hydrogen phosphate -- Disodium hydrogen phosphate -- N-acetyl glycine -- Viscosity B-coefficient; Thermodynamics -- Periodicals; Thermochemistry -- Periodicals; Thermodynamique -- Périodiques; Thermochimie -- Périodiques; Thermochemistry; Thermodynamics; Periodicals; 541.369
• DOI: 10.1016/j.jct.2015.10.017
• Languages: English
• ISSNs: 0021-9614

Abstract

Highlights: Densities, speeds of sound, viscosities of phosphate salts in aqueous N-acetyl glycine. Large values of partial molar volume for dipotassium hydrogen phosphate. Partial molar volume of transfer are positive for phosphate salts. Positive B -coefficient values indicate ion–solvent interactions. Abstract: Densities, speeds of sound and viscosities of dipotassium hydrogen phosphate (DPHP) and disodium hydrogen phosphate (DSHP) in aqueous solutions of N-acetyl glycine (AcGly) are reported at different temperatures. Densities and speeds of sound have been used to calculate apparent molar volume, apparent molar isentropic compression, partial molar volume, partial molar isentropic compression, partial molar volume of transfer, partial molar isentropic compression of transfer and partial molar expansivity. Pair and triplet interaction coefficients have also been calculated. Experimental viscosities have been used to determine B -coefficients. Further pair and triplet interaction coefficients have also been calculated. The results are discussed in terms of solute–solvent interactions.