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Papers by aishwarya navarkhele

Research paper thumbnail of Dielectric Constant, Density, and Refractive Index in Binary Mixtures of Ethanol with N,N-Dimethylformamide at 293.15 K

Russian Journal of Physical Chemistry A, May 1, 2022

Research paper thumbnail of Static Dielectric Constants, Densities, Refractive Indices and Related Properties of Binary Mixtures at Various Temperatures Under Atmospheric Pressure

International Journal of Thermodynamics

Experimental dielectric constants at (293.15, 298.15, 303.15) K, densities and refractive indices... more Experimental dielectric constants at (293.15, 298.15, 303.15) K, densities and refractive indices at 293.15 K are reported for water- ethanol and water- n-butanol binary mixture systems over the entire volume fraction range and atmospheric pressure. From the experimental dielectric data, the excess dielectric constant, effective Kirkwood correlation factor, Bruggeman factor and from density and refractive index data various parameters and their excess properties like excess density, excess refractive index, excess molar polarization, and excess molar volume were estimated and reported in the study. The static dielectric constant of the studied binary mixtures decreases with increase in temperature and volume fraction of the solutes. The density values are decreasing and refractive indices are increasing with increasing volume fraction of ethanol and n-butanol in water. Excess molar volumes values of ethanol and n-butanol are negative over the entire volume fraction range shows the p...

Research paper thumbnail of Molecular interaction studies on thermophysical and excess properties of formamide with n-propanol

Static dielectric constants at (293.15, 298.15, 303.15 K), densities and refractive indices at (2... more Static dielectric constants at (293.15, 298.15, 303.15 K), densities and refractive indices at (293.15 K) of binary mixtures of formamide with n-propanol have been measured over the entire range of mole fractions. The variation in measured parameters with respect to temperature and composition are discussed in detail. Excess dielectric constants, Kirkwood and Bruggeman factors were estimated from experimental dielectric data to confirm molecular structure, orientation of electric dipoles, intermolecular interaction and hydrogen bonding in the binary mixtures. Excess molar volume VE, deviation in molar refraction ΔR, related thermophysical parameters, excess properties have also been estimated and analyzed. The nonlinear variation in dielectric constants, deviation in linear relation in Bruggeman factor, negative VE and ΔR suggest the presence of molecular interaction and formation of hydrogen bonds between formamide and n-propanol molecules.

Research paper thumbnail of Dielectric Constant, Density, and Refractive Index in Binary Mixtures of Ethanol with N,N-Dimethylformamide at 293.15 K

Russian Journal of Physical Chemistry A, May 1, 2022

Research paper thumbnail of Static Dielectric Constants, Densities, Refractive Indices and Related Properties of Binary Mixtures at Various Temperatures Under Atmospheric Pressure

International Journal of Thermodynamics

Experimental dielectric constants at (293.15, 298.15, 303.15) K, densities and refractive indices... more Experimental dielectric constants at (293.15, 298.15, 303.15) K, densities and refractive indices at 293.15 K are reported for water- ethanol and water- n-butanol binary mixture systems over the entire volume fraction range and atmospheric pressure. From the experimental dielectric data, the excess dielectric constant, effective Kirkwood correlation factor, Bruggeman factor and from density and refractive index data various parameters and their excess properties like excess density, excess refractive index, excess molar polarization, and excess molar volume were estimated and reported in the study. The static dielectric constant of the studied binary mixtures decreases with increase in temperature and volume fraction of the solutes. The density values are decreasing and refractive indices are increasing with increasing volume fraction of ethanol and n-butanol in water. Excess molar volumes values of ethanol and n-butanol are negative over the entire volume fraction range shows the p...

Research paper thumbnail of Molecular interaction studies on thermophysical and excess properties of formamide with n-propanol

Static dielectric constants at (293.15, 298.15, 303.15 K), densities and refractive indices at (2... more Static dielectric constants at (293.15, 298.15, 303.15 K), densities and refractive indices at (293.15 K) of binary mixtures of formamide with n-propanol have been measured over the entire range of mole fractions. The variation in measured parameters with respect to temperature and composition are discussed in detail. Excess dielectric constants, Kirkwood and Bruggeman factors were estimated from experimental dielectric data to confirm molecular structure, orientation of electric dipoles, intermolecular interaction and hydrogen bonding in the binary mixtures. Excess molar volume VE, deviation in molar refraction ΔR, related thermophysical parameters, excess properties have also been estimated and analyzed. The nonlinear variation in dielectric constants, deviation in linear relation in Bruggeman factor, negative VE and ΔR suggest the presence of molecular interaction and formation of hydrogen bonds between formamide and n-propanol molecules.

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