Ultrasonic Study of Molecular Interactions in some Bio-Molecule Aqueous Solution at 308K (original) (raw)
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Thermodynamic Studies on Some Bio-Molecule Aqueous Solution at 303.15K Using Ultrasonic Technique
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The ultrasonic velocity measurements find wide application in characterizing the physic-chemical behavior of liquid mixtures. Thermodynamic investigations make innovations in the study of molecular interactions of solute-solute, solute-solvent, solvent-solvent in liquids. The ultrasonic parameters are directly related to a number of thermodynamic parameters. The ultrasonic velocity and density measurements have been carried out for aqueous solution of Gelatin as a function of concentration, at 303.15Ktemperature and at frequency 2MHz. From the experimental data, thermodynamic parameters such as adiabatic compressibility (β) and specific acoustic impedance (Z) for the binary mixtures have been computed. These thermodynamic parameters have been further used to elicit the ion-ion and solute-solvent in the binary mixtures.
2014
Acoustic investigations make innovations in the study of molecular interactions of solute-solute, solute-solvent, solventsolvent in liquids. The ultrasonic parameters are directly related to a number of thermodynamic parameters. The interactions of urea and molecular dynamics, solute in solvent have been investigated by ultrasonic technique. The ultrasonic velocities and densities have been measured for aqueous solution of Gelatin as a function of concentration, at four different temperatures 298.15K, 303.15K, 308.15K and 313.15K and frequency 2MHz. The experimental data have been used to compute the thermodynamic properties namely adiabatic compressibility (), intermolecular free length () and specific acoustic impedance () for the binary mixtures with a view to investigate the solute-solute and solute-solvent interactions. These thermodynamic parameters have been further used to elicit the ion-ion and solutesolvent in the binary mixtures.
Archives of Applied Science Research, 2013
The ultrasonic velocity(u), density(ρ) and viscosity (η) have been measured for mixed aqueous systems (water +NaCl+ serine) & (water+ MgCl 2 + serine) at 303.15,308.15 &313.15K at 2MHz. From experimental data thermodynamic parameters such as adiabatic compressibility(β a),acoustic impedance (z), intermolecular free length (L f), relative association (R A) have been estimated using the standard relations. The results have been analyzed on the basis of variations of thermodynamic parameters. These parameters were used to study the ion-solvent interaction present in each solution.
Ultrasonic Investigation of Molecular Interactions in Binary Mixtures at 303.15K
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The ultrasonic velocity, density and viscosity at 303K have been measured in binary systems of amino acids with electrolytes. From experimental data acoustical parameters such as adiabatic compressibility (βa), acoustic impedance (z), intermolecular free length (Lf), relative association (RA) have been estimated using the standard relations. The results have been analyzed in terms of molecular interaction between the components of the mixtures.
The study of molecular interaction using ultrasonic technique in the binary liquid mixture of Ethanol + Glycerol as a function of the composition has been carried out at four different temperatures 3030K, 3080K, 3130K and 3180K and a fixed frequency 5MHz. The thermo-acoustic parameters such as Adiabatic compressibility (β), Intermolecular free length (Lf), Free volume (Vf), Internal pressure (πi), Relaxation time (τ) and Gibb’s free energy(ΔG*), and their excess values are evaluated from the measured values of Ultrasonic velocity (U), Density (ρ) and Viscosity (η). The molecular interaction present in the liquid mixtures such as hydrogen- bonding, dipole-dipole association, acceptor-donor and electrostriction are analyzed on the basis of these parameters. The negative values of these excess parameters suggest the presence of dipolar and dispersive interaction between the components of the molecule in the mixture while the positive values of excess thermo-acoustic parameters suggest the presence of weak interactions between the unlike molecules in the liquid mixtures.
Molecular interactions studies in liquid mixture using Ultrasonic technique
sersc.org
Density, viscosity and ultrasonic velocity have been measured for binary liquid mixtures containing Methylmethacrylate+2-Methoxy ethanol, Methylmethacrylate +2-Ethoxy ethanol, Methyl methacrylate+2 Butoxy ethanol at 303K. The adiabatic compressibility, free length, free volume, internal pressure, relaxation time, acoustic impedance and Gibbs's free energy values have been calculated from the experimental data. These parameters are used to discuss the molecular interactions in the mixtures.
Theoretical Investigation of Ultrasonic Studies and Molecular Interactions in Binary Liquid Mixtures
2013
The ultrasonic velocity can be measured using a single crystal variable path interferometer with 2MHZ by standard procedure. Using the ultrasonic velocity, various acoustical parameters such as adiabatic compressibility(βa), free length(Lf), acoustic impedance(Z), free volume(Vf), molar volume(V), internal pressure(∏i), relaxation time( ), Rao , s constant(R), Enthalpy(H), Wada , s constant(W), apparent molar volume(фv), apparent molar compressibility(фk) can be calculated. Using the experimental and computed data excess parameters such as excess adiabatic compressibility (β E ), excess acoustic impedance (Z E ), excess intermolecular free length (Lf E ), excess volume(Δv), excess viscosity(Δɳ), can be computed. The density and viscosity for the binary liquid mixtures can be measured by using the specific gravity bottle method and Ostwald viscometer respectively. This papers investigates the theoretical aspects for the ultrasonic and molecular interactions in binary liquids.
Ultrasonic study of molecular interaction in ternary liquid mixtures at 293K
Densities and ultrasonic speeds of the ternary liquid mixture of diethyl amine with acetone and acetophenone in n-hexane at 293K over the entire composition range were measured. From these data, acoustical parameters such as adiabatic compressibility (intermolecular free length (L f), acoustic impedance (Z), internal pressure ( i), excess velocity (U E), excess adiabatic compressibility ( E), excess intermolecular free length (L f E), excess acoustic impedance ( E) have been evaluated. These excess parameters have been used to discuss the nature and extent of interaction between the component molecules in the ternary mixtures. The ultrasonic speeds calculated according to Nomoto's relation, Rao's specific sound velocity theory and impedance dependence relation and are compared with those obtained experimentally.
Ultrasonic study on some monosaccharides in aqueous media at 298.15K
Arabian Journal of Chemistry, 2012
The ultrasonic velocity (U), density (q) and viscosity (g) at 298.15 K have been measured in the binary systems of monosaccharides (glucose, fructose and galactose) in aqueous medium. The acoustical parameters such as adiabatic compressibility (b), free length (L f ), free volume (V f ), internal pressure (p i ), acoustical impedance (Z), relative association (R A ), molar sound velocity (R) and molar sound compressibility (W) are calculated. The results are interpreted in terms of molecular interaction between the components of the mixtures.