ie504938v_si_001.pdf (176.54 kB)
Effect of DBU (1,8-Diazobicyclo[5.4.0]undec-7-ene) Based Protic Ionic Liquid on the Volumetric and Ultrasonic Properties of Ascorbic Acid in Aqueous Solution
journal contribution
posted on 2015-02-25, 00:00 authored by Vickramjeet Singh, Dharmendra Singh, Ramesh L. GardasIn order to understand the strength
and type of interactions involved in ternary solutions, the effect
of solute or cosolute concentration and temperature is needed, as
an understanding of these interactions is helpful in biochemical and
biophysical chemistry. In this regard, we have studied the volumetric
and ultrasonic properties of one of the most important vitamins, i.e.,
ascorbic acid, in water and in the presence of newly synthesized protic
ionic liquid (1,8-diazabicyclo[5.4.0]undec-7-en-8-ium trifluoroacetate)
at temperatures of 293.15–328.15 K and at atmospheric pressure.
The experimentally measured density and speed of sound data were used
to calculate apparent molar volume and isentropic compressibility,
infinite dilution partial molar volume, and partial molar isentropic
compressibility. Volume of transfer (ΔtV2° and ΔtK°s,2), expansion coefficients, pair and triplet volumetric interaction
coefficients were also evaluated and discussed in terms of various
interactions occurring between ascorbic acid and PIL on the basis
of the structural interaction model.