H. Kumar, Vaneet Kumar, Monisha Sharma
Apr 1, 2018
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0
Influential Citations
14
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Journal
The Journal of Chemical Thermodynamics
Abstract
Abstract The interactions of polyhydroxy solutes d (+)-glucose and d (−)-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 of d (+)-glucose and d (−)-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 for d (+)-glucose and d (−)-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 (∂Vϕ0/∂T)p and its derivative (∂2Vϕ0/∂2T)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.