Studies on the interactions behaviour of polyhydroxy solutes d(+)-glucose and d(−)-fructose in aqueous triammonium citrate solutions over temperature range T = (288.15–318.15) K. (April 2018)

• Record Type: Journal Article
• Authors: Kumar, Harsh; Kumar, Vaneet; Sharma, Monisha; Behal, Isha
• Is Part Of: Journal of chemical thermodynamics. Volume 119(2018)
• Page Start: 1
• Page End: 12
• Publication Date: 2018-04
• Subjects: d(+)-Glucose -- d(−)-Fructose -- Triammonium citrate -- Apparent molar property -- Interaction coefficients -- Thermophysical properties; Thermodynamics -- Periodicals; Thermochemistry -- Periodicals; Thermodynamique -- Périodiques; Thermochimie -- Périodiques; Thermochemistry; Thermodynamics; Periodicals; 541.369
• DOI: 10.1016/j.jct.2017.12.003
• Languages: English
• ISSNs: 0021-9614

Abstract

Highlights: New densities and speeds of sound ford (+)-glucose andd (−)-fructose in aqueous TAC solutions. Positive apparent molar volumes and negative apparent molar compression shows the dominance of solute–solvent interactions. Positive transfer volumes indicate ion-ion interactions are prevalent in the mixture. Pair wise interactions predicted by pair interaction coefficient in TAC + saccharides mixtures. Abstract: The interactions of polyhydroxy solutesd (+)-glucose andd (−)-fructose with aqueous solutions of triammonium citrate (TAC) as a function of temperature have been enquired upon by combination of volumetric and ultrasonic studies. Densities and speed of sound ofd (+)-glucose andd (−)-fructose in (0.2, 0.4 and 0.6) mol·kg −1 aqueous solutions of triammonium citrate (TAC) are measured at T = (288.15, 298.15, 308.15 and 318.15) K and experimental pressure p = 0.1 MPa. The apparent molar volume, V ϕ, the partial molar volume V ϕ o, and standard partial molar volumes of transfer, Δ V ϕ o ford (+)-glucose andd (−)-fructose from water to aqueous solutions of triammonium citrate (TAC) have been calculated from density data. Apparent molar isentropic compression, K ϕ, s, partial molar isentropic compression K ϕ, s o and partial molar isentropic compression of transfer, Δ K ϕ, s o have been calculated from ultrasonic speed data. The expansibility parameter ( ∂Vϕ 0 / ∂T ) p and its derivative ( ∂ 2 Vϕ 0 / ∂ 2 T ) p along with pair ( VAB, KAB ) and triplet ( VABB, KABB ) interaction coefficients have also been calculated. The results have been interpreted in terms of solute–solute and solute–solvent interactions in these systems.