Molecular Interaction in Binary Mixtures of Benzyl Alcohol with Ethanol, Propan-1-ol and Octan-1-ol at 303 K: An Ultrasonic and Viscometric Study

2002 ◽  
Vol 67 (8) ◽  
pp. 1125-1140 ◽  
Author(s):  
Anwar Ali ◽  
Abida ◽  
Soghra Hyder ◽  
Anil Kumar Nain
Keyword(s):  
Benzyl Alcohol ◽  
Binary Mixtures ◽  
Acoustic Impedance ◽  
Empirical Relation ◽  
Isentropic Compressibility ◽  
Viscosity Data ◽  
Common Component ◽  
Ideal Mixing ◽  
Empirical Relations ◽  
Experimental Values

Densities, ultrasonic speeds and viscosities have been measured for benzyl alcohol, ethanol, propan-1-ol, octan-1-ol and for their binary mixtures with benzyl alcohol as common component at 303 K. From the experimental data, isentropic compressibility, relative association, acoustic impedance, molar sound velocity, excess volume, excess isentropic compressibility, deviations of viscosity and ultrasonic speed from linear dependence on composition, excess acoustic impedance and molecular association for all the three binary mixtures were obtained. These parameters have been interpreted in terms of intermolecular interactions. The experimental viscosity data of the three binary mixtures were used to test the validity of the empirical relations of Grunberg-Nissan, Tamura-Kurata, Hind-Mclaughlin, Katti-Chaudhary and Heric. The experimental values of ultrasonic speeds have been compared with those predicted on the basis of the Nomoto empirical relation, collision factor theory, free length theory and van Dael and Vangeel ideal mixing relation. The relative merits of these theories and relations are discussed.

scholarly journals 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

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Sangita Sharma ◽  
Khushbu Thakkar ◽  
Paras Patel ◽  
Madhuresh Makavana
Keyword(s):  
Binary Mixtures ◽  
Excess Molar Volumes ◽  
Polynomial Equation ◽  
Pure Component ◽  
Excess Properties ◽  
Excess Gibbs Free Energy ◽  
Free Energy Of Activation ◽  
Empirical Relations ◽  
Benzene Toluene ◽  
Experimental Values

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.

scholarly journals Evaluation of viscosity in binary mixtures of dimethyl sulphoxide at 298.15K

2021 ◽  
Vol 10 (5) ◽  
pp. 169-175
Author(s):  
Shipra Baluja
Keyword(s):  
Binary Mixtures ◽  
Excess Free Energy ◽  
Chemical Processes ◽  
Dimethyl Sulphoxide ◽  
Viscosity Data ◽  
Strength Of Interaction ◽  
Tertiary Butanol ◽  
Energy Of Mixing ◽  
Free Energy Of Mixing ◽  
Experimental Values

The viscosity of binary mixtures of dimethyl sulphoxide with different alcohols such as methanol, ethanol, 1-propanol, iso-propanol, 1-butanol, iso-butanol, tertiary butanol has been determined at 298.15K. The experimental values are compared with theoretical values evaluated by different theories. It is observed that for some theories, values are in agreement with the experimental values. Further, an attempt has been made to study the intermolecular interactions in studied solutions in terms of excess free energy of mixing, strength of interaction parameters and interaction energy. The viscosity data of pure liquids and their mixtures are needed to design various chemical processes where heat and mass transfer are important.

An empirical relation for cluster decay preformation probability

2014 ◽  
Vol 23 (03) ◽  
pp. 1450018 ◽  
Author(s):  
M. Balasubramaniam ◽  
N. S. Rajeswari
Keyword(s):  
Mass Number ◽  
Empirical Relation ◽  
Cluster Decay ◽  
Q Value ◽  
Mass Asymmetry ◽  
Empirical Relations ◽  
Experimental Values ◽  
Physical Quantities ◽  
Penetration Probability ◽  
Good Agreement

Empirical relations for the preformation probability of cluster decay process in terms of the Q-value, mass asymmetry (η), mass number of the emitted cluster A2 is analyzed based on the discrepancy between the calculated and experimental half-lives of the cluster emitters. For the different empirical expressions considered corresponding to different physical quantities the preformation probability for the complete binary breakup of 226 Ra is calculated and the obtained results are compared with the preformed cluster model calculation (P0( PCM )) and another calculation in which the overlapping penetration probability is treated as the preformation probability (P0(μ)). Our empirical results for the use of Q-value compare well with P0(μ). Results due to the use of Q and its powers along with the combination of mass number A2 of the cluster emitted, and mass asymmetry η, reveal that preformation factor depends strongly on Q-value rather than A2 and η. Calculated half-lives of different cluster decays for the use of empirical P0 values are found to be in good agreement with the experimental values.

scholarly journals Partial Molar Volumes and Spectral Studies on Binary Mixtures of p-Chloroacetophenone with Aniline and N-Alkyl Anilines

2019 ◽  
Vol 31 (10) ◽  
pp. 2173-2180
Author(s):  
M. Radha Sirija ◽  
D. Bala ◽  
D. Ramachandran
Keyword(s):  
Binary Mixtures ◽  
Partial Molar Volumes ◽  
Polynomial Equation ◽  
Isentropic Compressibility ◽  
Liquid Mixtures ◽  
Spectral Studies ◽  
Viscosity Data ◽  
Molar Volumes ◽  
Different Temperatures ◽  
Semi Empirical

Ultrasonic velocities (u), viscosities (η) and densities (ρ) were measured for the binary mixtures of p-chloroacetophenone with aniline, N-methylaniline and N,N-dimethylaniline over the whole range of composition at different temperatures (303.15 K to 318.15 K) and at atmospheric pressure 0.1 MPa. Excess molar volume (VE), deviation in viscosity (Δη) and deviation in isentropic compressibility (Δks) have been calculated and fitted to Redlich-Kister polynomial equation to obtain their coefficients and standard deviations. The analyzed viscosity data of binary liquid mixtures were used to test the Grunberg-Nissan, Katti-Chaudari and Hind semi-empirical equations. The FTIR spectral study supports the experimental data to explain the molecular interactions between unlike molecules. Partial molar volumes of binary mixtures were evaluated for better understanding of intermolecular interactions of the above binary mixtures.

scholarly journals Physico-chemical properties of binary systems involving modifier (methanol or propionic acid) and an acidic extractant di (2-ethylhexyl) phosphoric acid (DEHPA): volumetric, acoustic and viscometric routes

2020 ◽  
Vol 10 (4) ◽  
pp. 5880-5885
Keyword(s):  
Solvent Extraction ◽  
Molar Volume ◽  
Propionic Acid ◽  
Binary Mixtures ◽  
Acoustic Impedance ◽  
Molecular Interaction ◽  
Chemical Properties ◽  
Isentropic Compressibility ◽  
Intermolecular Free Length ◽  
Physico Chemical

In solvent extraction, a suitable modifier, basically polar liquid is used with extractant like DEHPA, TBP, TOPO and MIBK to enhance the efficiency in extraction processes. This paper is related to the study of physico-chemical properties of polar – polar binary mixtures at 303.15K and 0.1 MPa. Molar volume, free volume, isentropic compressibility, intermolecular free length, specific acoustic impedance, relaxation time, Rao’s constant, Wada’s constant, absorption coefficient have been calculated from the experimentally measured data of density, ultrasonic velocity and viscosity of pure components and binary mixtures of methanol/ propionic acid + DEHPA. In addition, excess molar volume, excess Gibb’s energy of activation of viscous flow, deviations in viscosity, isentropic compressibility, free volume, intermolecular free length and acoustic impedance were also computed from the experimental data. The observed variations of excess/deviation functions with the composition of DEHPA have been discussed in terms of molecular interaction between unlike molecules in two binary mixtures due to chemical, physical and structural effects. It is found that the molecular interaction of methanol with extractant DEHPA is better than that of propionic acid and so methanol may be used as a suitable modifier with DEHPA in the solvent extraction process.

scholarly journals Excess Parameter Studies on Tetrahydropyran with 1-Hexanol at T = 298.15 to 318.15 K Using Anton Paar

2014 ◽  
Vol 36 ◽  
pp. 114-124
Author(s):  
K. Anil Kumar ◽  
Ch. Srinivasu
Keyword(s):  
Binary Mixture ◽  
Sound Velocity ◽  
Excess Molar Volume ◽  
Acoustic Impedance ◽  
Entire Range ◽  
Isentropic Compressibility ◽  
Excess Parameters ◽  
Excess Parameter ◽  
Experimental Values ◽  
Kister Equation

Sound velocity, densities of binary mixture of Tetrahydropyran (THP) with 1-hexanol has been measured over the entire range of composition at T = 298.15 to 318.15 K. The excess parameters viz., excess sound velocity, deviations in isentropic compressibility, excess molar volume, excess free length and excess acoustic impedance are deduced from experimental values and discussed intermolecular interactions present in the mixture. At the end all the parameters have been fitted to Redlich-Kister equation and their coefficients are obtained.

Conductance and Viscometric Studies of Some Tetraalkylammonium and Sodium Salts in Acetonitrile-Dimethyl Sulfoxide Mixtures at 35 °C

1992 ◽  
Vol 57 (10) ◽  
pp. 2078-2088 ◽  
Author(s):  
Mohinder S. Chauhan ◽  
Kishore C. Sharma ◽  
Sanjay Gupta ◽  
Suvarcha Chauhan ◽  
Vijay K. Syal
Keyword(s):  
Dimethyl Sulfoxide ◽  
Binary Mixtures ◽  
Molar Conductivity ◽  
Viscosity Data ◽  
Conductivity Data ◽  
Equation Resolution ◽  
Solvent Interaction ◽  
Sodium Salts ◽  
Ionic Components

Molar conductances and viscosities of Bu4NBPh4, NaBPh4 and R4NBr (R ethyl, propyl and butyl) at 35 °C in acetonitrile (AN), dimethylsulfoxide (DMSO) and their binary mixtures have been reported. The conductivity data has been analysed by the Shedlovsky conductance equation and viscosity data by the Jones-Dole equation. Resolution of limiting molar conductivity (Λ0) and viscosity B coefficient of electrolytes into their ionic components have been achieved by the reference salt method. Viscosity A coefficients have been compared with theoretical Aη coefficients. Derived conductance and viscosity parameters have been discussed in terms of the ion-solvent interaction.

scholarly journals A Comparison Study on Molecular Interaction of an Acidic Organophosphoric Extractant with Substituted Aromatic Hydrocarbon (p-xylene/toluene) at 303.15K

2020 ◽  
Vol 11 (3) ◽  
pp. 10052-10058
Keyword(s):  
Binary Mixtures ◽  
Ultrasonic Velocity ◽  
Aromatic Hydrocarbons ◽  
Molecular Interaction ◽  
Atmospheric Pressure ◽  
Composition Range ◽  
Isentropic Compressibility ◽  
Extraction Process ◽  
Comparison Study ◽  
Intermolecular Free Length

In the present study, the excess molar volume (VE) and the deviations in intermolecular free length (ΔLf), isentropic compressibility (Δβs), acoustic impedance (ΔZ), and ultrasonic velocity (ΔU) were calculated using the experimentally measured values of density (ρ) and ultrasonic velocity (U) of binary mixtures of an acidic organophosphoric extractant (DEHPA) with two substituted aromatic hydrocarbons, i.e., p-xylene and toluene at 303.15K and atmospheric pressure, 0.1MPa over the entire composition range of DEHPA. The results of both binary mixtures have been presented graphically and compared in terms of molecular interaction between unlike molecules of the mixtures, which outcome may be applied in the solvent extraction process.

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