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Volumetric, viscometric and optical study of molecular interactions in binary mixtures of diethyl malonate with ketones at 303.15, 308.15 and 313.15K  [PDF]
Rathnam Manapragada V.,Mohite Sudhir,Kumar Manapragada S.
Journal of the Serbian Chemical Society , 2012, DOI: 10.2298/jsc110712198r
Abstract: Density ρ, viscosity η, and refractive index nD were measured for the binary mixtures of diethyl malonate with ketones (acetophenone, cyclopentanone, cyclohexanone and 3-pentanone) at temperatures (303.15, 308.15 and 313.15) K over the entire composition range. Excess volume VE, deviation in viscosity Δη, excess Gibb’s free energy of activation for viscous flow ΔGE and deviation in molar refraction R were determined from the experimental data and computed results were fitted to the Redlich-Kister polynomial equation. The values of VE, Δη, ΔGE, and ΔR were plotted against the mole fraction of diethyl malonate. The observed positive and negative values of excess parameters for all the studied binary mixtures were explained on the basis of intermolecular interactions present in these mixtures. Further different empirical relations were used to correlate the binary mixture viscosities and refractive indices.
Acoustical Studies on the Ternary Mixture of 1, 4- Dioxane + Chloroform + Cyclohexane liquid Mixtures At 303.15, 308.15 and 313.15 K
V. Vanathi,S. Mullainathan,S. Nithiyanantham
Journal of Chemistry , 2012, DOI: 10.1155/2012/473075
Abstract:
Study of Intermolecular Interactions of Acetophenone and Benzene at 303.15, 313.15 and 323.15 K  [cached]
K. Saravanakumar,R. Baskaran,T. R. Kubendran
Modern Applied Science , 2010, DOI: 10.5539/mas.v4n6p84
Abstract: The behaviour of mixture of acetophenone and benzene as a function of temperature and composition has been investigated by measuring sound velocity in conjunction with density at 303.15, 313.15and 323.15 K. Derived parameters computed from density (?) and sound velocity (U) have been used to determine excess molar volumes (VME), excess isentropic compressibilities (KSE) and excess inter molecular free length (LfE).The excess functions have been discussed in terms of intermolecular interactions between the components of binary mixture. The validity of various theoretical approaches of liquids has been tested for the system by comparing theoretical sound speeds with those experimentally determined over the entire composition range in the temperature range 303.15-323.15K. The computed results have been fitted to the Redlich-Kister polynomial equation to estimate the smoothening coefficients and standard deviations for this system. The validity of various theoretical approaches of liquids has been tested for the system by comparing theoretical sound speeds with those experimentally determined over the entire composition range in the temperature303.15-323.15K.
Density and Comparative Refractive Index Study on Mixing Properties of Binary Liquid Mixtures of Eucalyptol with Hydrocarbons at 303.15, 308.15 and 313.15 K  [PDF]
Sangita Sharma,Pragnesh B. Patel,Rignesh S. Patel,J. J. Vora
Journal of Chemistry , 2007, DOI: 10.1155/2007/485378
Abstract:
Volumetric, Viscometric and Excess Properties of Binary Mixtures of 1-Iodobutane with Benzene, Toluene, o-Xylene, m-Xylene, p-Xylene, and Mesitylene at Temperatures from 303.15 to 313.15?K  [PDF]
Sangita Sharma,Khushbu Thakkar,Paras Patel,Madhuresh Makavana
Advances in Physical Chemistry , 2013, DOI: 10.1155/2013/932103
Abstract: Densities and viscosities have been determined for binary mixtures of 1-iodobutane with benzene, toluene, o-xylene, m-xylene, p-xylene, and mesitylene at 303.15, 308.15, and 313.15?K for the entire composition range at atmospheric pressure. The excess molar volumes, , deviations in viscosity, Δη, and excess Gibbs’ free energy of activation flow, Δ have been calculated from the experimental values. The experimental data were fitted to Redlich-Kister polynomial equation. The variations of these parameters with composition of the mixtures and temperature have been discussed in terms of molecular interactions occurring in these mixtures. Further, the viscosities of these binary mixtures were calculated theoretically from their corresponding pure component data by using empirical relations like Bingham, Arrhenius and Eyring, Kendall and Munroe, Hind, Katti and Chaudhari, Grunberg and Nissan, and Tamura and Kurata. Comparison of various interaction parameters has been expressed to explain the intermolecular interactions between iodobutane and selected hydrocarbons. 1. Introduction Densities and viscosities of solution are very important properties especially for the chemical design and for the optimization of chemical processes. The study of these properties plays an important role in many industrially interesting systems such as organic synthesis, ion extraction systems, gas adsorption solvents, and mass transfer phenomena. Furthermore, the study of excess thermodynamics and transport properties for binary mixtures gives an important information concerning the deeper understanding of the molecular liquid structure and intermolecular interactions [1]. 1-iodobutane has vast applications at industrial level because it works as an alkylating agent in organic synthesis. Aromatic hydrocarbons are also important organic solvents in organic synthesis and extraction systems. Aromatic hydrocarbons like xylenes were frequently used as octane enhancer in vehicles [2]. The excess molar volume and viscosity deviations are properties sensitive to different kinds of association in the pure components and in the mixtures. These properties have been used to investigate the molecular packing, molecular motions, and various types of intermolecular interactions and their strengths, but these properties are influenced by the size, shape, and chemical nature of the component molecules [3–5]. In view of this significance, it was thought worthwhile to study the binary mixtures of 1-iodobutane, benzene, toluene, o-, m-, and p-xylenes in order to understand the interactions between
ACTIVATION PARAMETERS AND EXCESS THERMODYANAMIC FUNCTIONS OF HYDROXAMIC ACIDS IN ACETONE - WATER MIXTURE AT 303.15 K AND 313.15 K: A VISCOMETRIC APPROACH
Ajita Dixit, Rama Pande
Bulletin of the Chemical Society of Ethiopia , 2007,
Abstract: Experimental values of density and viscosity of N-arylsubstituted hydroxamic acids were evaluated at T = 303.15 K and 313.15 K in acetone-water mixture as a function of their concentration. The properties of solutes were obtained as an intercept of plots C vs η of solutions. Applying these data, viscosity-B-coefficients, activation parameters (Δμ10≠) and (Δμ20≠) and excess thermodynamic functions, viz., excess molar volume (VE), excess viscosity, ηE and excess molar free energy of activation of flow, (GE) were calculated. The value of interaction parameter, d, of Grunberg and Nissan expression have also been calculated and reported. Analysis of these data suggests that specific interactions are present in the system. KEY WORDS: Activation parameters, N-Arylsubstituted hydroxamic acids, Density, Viscosity, Viscosity-B-coefficients, Excess viscosity Bull. Chem. Soc. Ethiop. 2007, 21(3), 379-387.
Study of Intermolecular Interactions of Binary Liquid Mixtures by Measuring Intensive Macroscopic Properties at (303.15, 313.15 and 323.15) K and at Ambient Pressure  [cached]
T.R Kubendran,R. Baskaran
Modern Applied Science , 2009, DOI: 10.5539/mas.v2n3p16
Abstract: Measurements of thermodynamic and transport properties have been adequately employed in understanding the nature of molecular systems and physico-chemical behavior in liquid mixtures. These properties are important from practical and theoretical point of view to understand liquid theory. In the present study density (?) and viscosity (?), have been measured for a binary liquid mixture of Diacetone alcohol with benzene and chlorobenzene, over the entire composition range at 303.15 K, 313.15 K and 323.15 K and the evaluation of different excess properties. The viscosity values and excess values were fitted to respective models. It was found that in all cases, the data obtained fitted with the values correlated by the corresponding models very well. The molecular interactions existing between the components and comparison of liquid mixtures were also discussed.
Activation parameters and excess thermodyanamic functions of hydroxamic acids in acetone-water mixture at 303.15 K and 313.15 K: A viscometric approach  [cached]
Ajita Dixit,Rama Pande
Bulletin of the Chemical Society of Ethiopia , 2007,
Abstract: Experimental values of density and viscosity of N-arylsubstituted hydroxamic acids were evaluated at T = 303.15 K and 313.15 K in acetone-water mixture as a function of their concentration. The properties of solutes were obtained as an intercept of plots C vs η of solutions. Applying these data, viscosity-B-coefficients, activation parameters (Δμ10≠) and (Δμ20≠) and excess thermodynamic functions, viz., excess molar volume (VE), excess viscosity, ηE and excess molar free energy of activation of flow, (GE) were calculated. The value of interaction parameter, d, of Grunberg and Nissan expression have also been calculated and reported. Analysis of these data suggests that specific interactions are present in the system.
A volumetric and viscometric study of 4-aminobutyric acid in aqueous solutions of metformin hydrochloride at 308.15, 313.15 and 318.15 K  [PDF]
KRISHA RAJAGOPAL,S. S. JAYABALAKRISHNAN
Journal of the Serbian Chemical Society , 2011,
Abstract: Density (r) and viscosity (h) measurements were performed for4-aminobutyric acid in 0.05, 0.10 and 0.15 M aqueous metformin hydrochloride at 308.15, 313.15 and 318.15 K. The measured values of density and viscosity were used to estimate some important parameters, such as the partial molal volume, Vf, the standard partial molal volume, Vf, the standard partial molal volume of transfer, DVf, the hydration number, nH, the second derivative of the infinite dilution of the standard partial molal volume with temperature 2Vf/ T2, the viscosity B-coefficients, variation of B with temperature, dB/dT, the free energy of activation per mole of solvent Dm1* and solute Dm2* of the amino acid in a ternary system. These parameters were interpreted in terms of solute–solute and solute–solvent interactions and structure making/breaking ability of solutes in the given solution.
An Interaction Study of Chloro and Alkyl Substituted Benzylamine with DPPH● through UV Spectrophotometric and Physicochemical Methods at T = (298.15, 303.15 and 308.15) K  [PDF]
Rakesh Kumar Ameta, Man Singh, B. S. Kitawat
Journal of Materials Science and Chemical Engineering (MSCE) , 2014, DOI: 10.4236/msce.2014.21008
Abstract:

Radical scavenging activity (RSA) of chloro and methyl substituted benzylamine derivatives (BADs) has been studied using 1, 1-diphenyl-2-picrylhydrazyl free radical (DPPH?) through spectrophotometric and physico- chemical techniques at T = (298.15, 303.15 and 308.15) K. New experimental data on the density, sound velocity, isentropic and apparent molal compressibility of selected BADs + DPPH solutions as a function of temperature and concentration are reported. The results are discussed with regards to structure-activity relationship (SAR) principles of BADs. The relative deviations in RSAs varied with structural potentials of BADs which were analyzed by making a comparative study for both the spectrophotometric and physicochemical results.

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