Showing papers in "The Journal of Chemical Thermodynamics in 1980"

TL;DR: Simultaneous torsion and weighing-effusion techniques were used to measure the vapour pressure as a function of temperature in this paper, and the enthalpies of sublimation were derived from the temperature dependence of vapour pressures.

TL;DR: In this paper, the molar excess volumes of C6H12 + (1 − x)C6H6 were determined at 293.15, 298.15 and 303.15 K from density measurements made by use of a vibrating densimeter.

TL;DR: In this paper, phase equilibria in fluid (n -hexane + water) were measured in the temperature range 610 to 675 K and at pressures from 15 to 140 MPa.

TL;DR: In this paper, a series of binary mixtures of hexan-1-ol with the n-alkanes C 5, C 6, C 8, and C 10 were measured at 298.15 K in a successive dilution dilatometer.

TL;DR: In this paper, the dissociation pressures of hydrates in equilibrium with (methane + ethane) gas mixtures containing [0.177CH 4 + 0.823C 2 H 6], [ 0.047CH 4+ 0.953C 2H 6 ], [0,016CH 4 plus 0.984C 2h 6 ], and [1.000C 2 h 6 ] were determined between 277.0 and 288.0 K.

TL;DR: In this article, the vapor pressure of pyrene (crystal I and liquid) and its enthalpy of combustion were determined with literature values of entropy, with the results used for compiling the chemical thermodynamic properties for the vapor state.

TL;DR: The solubility of carefully characterized NiO has been measured from 423 to 573 K in a flow apparatus, using solutions whose composition ranged from HCl of molality 5 × 10−4 mol kg−1 to NaOH ofmolality 4 × 10 −2 mol kg −1.

TL;DR: In this paper, the Schottky contribution associated with the low-lying J-manifolds of Eu(OH)3 was resolved with the aid of a new lattice-heat-capacity approximation based upon volumetric interpolation between the lattice heat capacities of the La(OH)-3 and Gd-OH-3 homologs.

TL;DR: Excess enthalpies, excess volumes, and excess Gibbs free energies are reported over the entire composition range for n-hexane + n-undecane at 298.15 and 308.15 K as discussed by the authors.

TL;DR: In this article, the Schottky contribution of Tb(OH)3 and Tb3+ -doped Y(OH)-3 was used to estimate the crystal-field splitting of the 4 I 9 2 J-manifold.

TL;DR: In this article, the enthalpies of dilution of aqueous solutions of L-alanine, L-arginine, l-cysteine, glycine, serine, and L-valine have been measured by flow calorimetry, and used to calculate the partial molar entropies of the solution components.

TL;DR: Experimental vapor pressures are reported for 3,3-diethylpentane, methylenecyclobutane, ethylbenzene, biphenylene, 1,2-diphenylethane, trimethylene oxide, 1.2-epoxybutane, trans-2,3 -epoxy butane, 1 3-difluorobenzene, 1 4 -difluentobenzenes, methanethiol, 2,2,4,4-tetramethyl-3-thiapent

TL;DR: Excess enthalpies, excess volumes, and excess Gibbs free energies are reported over the entire composition range for (methylcyclohexane + n -hexane) at 298.15 and 308.15 K as mentioned in this paper.

TL;DR: A semi-automatic adiabatic calorimeter based on the Westrum descriptions was constructed to measure heat capacities of pure liquids and liquid mixtures in the temperature range 90 to 300 K as discussed by the authors.

TL;DR: Excess enthalpies, excess volumes, and excess Gibbs free energies are reported over the entire composition range for n -hexane + di- n -butyl ether at 298.15 and 308.15 K.

TL;DR: In this paper, the vapour pressure of liquid propane has been measured for 14 temperatures from 310 to 368 K with high precision, including the measurements of Douslin and Harrison (7) for temperatures between 258 and 353 K, Kemp and Egan (10) from 166 to 232 K, and the low pressure measurements performed by Carruth and Kobayashi (2) have been used to determine a new vapour-pressure equation of the Wagner type.

TL;DR: In this paper, the relative apparent molar enthalpies L φ for NH 4 NO 3 solutions at 298.15 K were evaluated from calorimetric enthpies of dilution for the molality range 0 to 25 mol kg −1 by procedures which suppress the dissociation of the NH 4 + ion and thereby eliminate that influence on the entalpies.

TL;DR: The excess enthalpies of n -pentane + methanol, + ethanol, + n -propanol,+ n -butanol, + N -pentanol,+ N -hexanol, as discussed by the authors.

TL;DR: In this article, a magnetic suspension densimeter was used to determine orthobaric liquid densities of gravimetrically prepared multicomponent mixtures containing the major components of liquefied natural gas, i.e. nitrogen, methane, ethane, propane, isobutane, and normal butane, between 105 and 125 K.

TL;DR: An adiabatic calorimeter for measurements of heat capacities of metallic systems in the temperature range 6 to 300 K has been assembled and tested by measurements on alumina and copper as mentioned in this paper.

TL;DR: In this paper, the authors measured the VmE of binary aqueous non-electrolyte mixtures dilatometrically in a special stainless-steel mixing cell mounted in an autoclave up to p = 250 MPa and at T = 273.15 K.

TL;DR: In this paper, a method was applied to toluene, acetone, benzaldehyde, pyrrolidine, polycyclic pyridine, 2-picoline, propan-2-thiol, ethanol, and propan 2-ol to obtain reference values of low vapour pressure.

TL;DR: Excess enthalpies at 29815 K of some (chloroalkane + n-alkane) mixtures were reported in this article for 1-chlorobutane + and t-butylchloride + an nalkane.

TL;DR: In this article, specific volumes for (ethanol + methylcyclopentane), (n-heptane + ethanol), and (methylcyclopentane+n heptane) at various compositions are presented.

TL;DR: In this paper, the energies of combusion of realgar, α-As 4 S 4 and vitreous As 2 S 3 in fluorine were measured in a bomb calorimeter.

TL;DR: In this article, the standard enthalpy of solution for NH 4 NO 3 (c, IV) was measured on different batches of material which had been dried by several different procedures and which were brought to the standard crystalline state (phase IV) by different physical and thermal treatments.

TL;DR: In this article, a scaled fundamental equation, incorporating Ising-like asymptotic behavior, revisions of and corrections to scaling, has been fitted to the results for the 99.993 moles per cent pure sample.

TL;DR: In this paper, the excess enthalpy of repeated functional groups in n-hexane+ether or + ketone was measured as a function of composition and the results showed that the HE of nhexane +ether was higher than that of 1,2-dimethoxyethane+cyclohexane, and this can be attributed to dispersive aliphatic-cycloaliphatic interactions.

TL;DR: In this paper, a fixed-path acoustic cavity using variable-frequency electrostatic transducers operating between 1 and 30 kHz was used to measure the speed of sound for nitrogen gas at pressures from 0.03 to 1.5 MPa on 16 isotherms from 80 to 350 K.