K. C. Kalra

Molar excess Gibbs free energy of 1-Propanol or 2-Propanol + aromatic hydrocarbons at 298.15 K in terms of an association model with a Flory contribution term

Molar excess Gibbs free energy of mixing values for 1-propanol or 2-propanol + benzene, toluene, o- m- or p-xylene at 298.15 K have been calculated by the Barker method from vapour pressure data measured by a static method. The free energies of mixing for these binary systems are also predicted in terms of the Mecke-Kempter type of association model with a Flory contribution term using two interaction parameters. The predicted values agree reasonably well with the experimental values.

Excess enthalpies and volumes of mixing of 1-propanol or 2-propanol + cyclohexane at 298.15 and 308.15 K

Abstract Excess molar enthalpies and excess molar volumes at 298.15 and 308.15 K are reported for 1-propanol or 2-propanol with cyclohexane. The analysis in terms of Mecke-Kempter association model with a Flory contribution term and generalized quasi-lattice model by Barker is described.

Excess molar enthalpies of mixing of 1-propanol or 2-propanol with aromatic hydrocarbons at 308.15 K in terms of an association model

Heat of mixing data for 1-propanol or 2-propanol with benzene, toluene, o-xylene, m-xylene and p-xylene at 308.15 K have been reported. The analysis in terms of the Mecke-Kempter association model with a Flory contribution term and generalized quasi-lattice model by Barker is described.

Excess heat of mixing of 1-propanol or 2-propanol with benzene, toluene, o-, m- and p-xylenes at 298.15 K

Excess heat of mixing data at 298.15 K for 1-propanol or 2-propanol with benzene, toluene, o-xylene, m-xylene or p-xylene have been reported. Analysis in terms of the Mecke-Kempter association model with a Flory contribution term and generalized quasi-lattice model by Barker is described.

Molar excess free energy of mixing of 1-propanol or 2-propanol with cyclohexane at 298.15 and 308.15 K in terms of association model with a Flory contribution term

Excess molar Gibbs free energies of mixing for 1-propanol or 2-propanol + cyclohexane over the whole composition range at 298.15 and 308.15 K have been calculated from vapour pressure data measured by static method. The data have been analysed in terms of a Mecke-Kempter association model with a Flory contribution term.

Excess permittivities, excess refractive indices and NMR spectroscopic studies of solutions of 1,2-dibromoethane in aromatic hydrocarbons

Excess permittivities and excess refractive indices data for solutions of 1,2-dibromoethane (DBE) in benzene, toluene, o-xylene, m-xylene and p-xylene over the whole composition range at 25°C have been obtained. The analysis of excess dielectric properties suggests the existence of weak electron donor-acceptor type interactions between 1,2-dibromoethane (DBE) and aromatic hydrocarbons. The equilibrium constants and the dipole moments of the DBE-aromatic hydrocarbon complexes in solutions have been evaluated. Strneght of interaction increases with electron donating power of aromatic hydrocarbons. NMR spectroscopic studies made on these binary liquid systems also provide evidence for the existence of weak electron donor-acceptor type specific interactions between DBE and aromatic hydrocarbons.