Showing papers in "The Journal of Chemical Thermodynamics in 1988"

TL;DR: In this paper, the ideal-gas thermodynamic properties of quinoline and isoquinoline were determined by adiabatic heat-capacity calorimetry, comparative ebulliometry, densitometry, and combustion and vibrational spectral frequencies.

TL;DR: In this article, the heat capacity difference between water and an aqueous solution of benzene or of toluene has been measured for a broad temperature range (from 278 to 413 K) under excess pressure, and the partial specific heat capacity of these solutes has been determined.

TL;DR: In this paper, an ultrasonic technique, described previously for pure liquids and based on the pulse-echooverlap method, has been used now to obtain the speeds of sound in binary mixtures.

TL;DR: In this paper, a truncated virial equation with only three adjusted parameters has been established for the gas range investigated which represents the density of methane with an uncertainty of less than ± 0.01 per cent.

TL;DR: In this article, the Tait equation has been used for the calibration of a bellows volumometer using water and toluene, and the experimental results are tabulated and the isothermal densities are represented by a quadratic equation for secant bulk modulus in terms of pressure.

TL;DR: In this article, the Simon equation was used to fit the T ( x ) isobars to the p ( T ) isopleths of the mixtures with a pressure range from 5 to 140 MPa in an optical high pressure cell by using the synthetic method.

TL;DR: In this paper, the p(T ) projections of (liquid + liquid) (ll), (liquid+ gas) (lg), critical curves, and of ( liquid + liquid + gas)(llg) three-phase curves for 18 binary mixtures of (an n -alkane + ammonia) with alkane-carbon numbers i = 1 to 12, and i = 14, 16, 18, 19, 20, and 36 were measured.

TL;DR: In this article, the amount-of-substance densities of pure ordinary steam were measured from 348 to 498 K at pressures from several kPa to the vapor pressure using the Burnett and Burnett-isochoric methods.

TL;DR: In this paper, the authors measured the performance of enthalpies and volumes of butanone or dipropylether + alkanol at 298.15 K (in some cases at 308.15 k) and found that 2-methylpropan-2-ol deviates from the systematic behaviour of those with n -alkan-1-ols.

TL;DR: In this paper, the speed of sound in gaseous butane between 250 and 320 K has been obtained from measurements of the frequencies of the radial modes of a spherical acoustic resonator.

TL;DR: In this article, the densities of liquid benzene and cyclohexane from 283 to 333 K and of liquid methanol and ethanol from 203 to 333 k and 193 to 333k, respectively, with an accuracy better than 0.02 per cent using a calibrated glass pyknometer.

TL;DR: In this paper, the standard molar enthalpy of formation Δ f H m o (UO 3 · 09H 2 O, 29815 K) = −(15063 ± 21) kJ · mol −1 .

TL;DR: In this article, the Gibbons and Laughton equation of state was used to model the phase diagrams of pure fluids and the implications of this equation for the representation of pure fluid, and of binary and ternary mixtures are discussed.

TL;DR: A vibrating-tube densimeter was used to measure differences between the density of NaCl and water from 0.0025 to 5.0 mol · kg −1, 323 to 600 K, and 0.1 to 40 MPa.

TL;DR: In this paper, the Gibbs energy, enthalpy, and entropy of formation were derived for the ideal gas at selected temperatures with available enthalpies of combustion at temperatures from 0 to 400 K.

TL;DR: In this paper, the enthalpies, entropies, and Gibbs energies of formation were derived for the ideal-gas state of 1,4-dimethylbenzene, 1,2-diphenylethane, and 2,3dimethylnaphthalene.

TL;DR: A pressure-scanning calorimeter operating in the pressure range from 0.1 to 400 MPa at temperatures from 303 to 503 K is described in this article, with a computer and a stepping motor.

TL;DR: In this paper, the Patel-Teja equation of state reproduces all the main features of H m E ( x ) and V m E( x ), and fits the measurements better than expected.

TL;DR: In this paper, the energies of combustion of crystalline triphenylphosphine (PHP) and triphenlyphophosphine oxide were determined in an aneroid adiabatic rotating bomb calorimeter.

TL;DR: In this paper, a correlation of the results in terms of the Flory theory of mixtures is described, and a correlation between the results and the results of the analysis of enthalpies at 298.15 K is presented.

TL;DR: In this article, the authors measured the difference in heat capacity between water and 0.0150 mol·kg−1 NaCl(aq) at 32 MPa with a modified flow calorimeter.

TL;DR: The standard molar enthalpy of formation of crystalline pyridine-Noxide at 29815 K was measured by solution reaction calorimetry: ΔfHmo(C5H5NO, cr)/(kJ·mol−1) = 86±23 as mentioned in this paper.

TL;DR: In this article, the vapour pressures of butan-1-ol + n -octane or n -decane were measured at 373.15 and 383.15 K using the ebulliometric method.

TL;DR: The results for (methanol + toluene) and for the two other binary mixtures constituting the ternary mixture are well correlated by the extended UNIQUAC equation.

TL;DR: In this article, the enthalpies of glycerol at infinite dilution were determined using microcalorimeter techniques, and the partial molar heat capacity was derived: Cp,2∞ = (239 ± 3) J · K−1 · mol−1.

TL;DR: In this article, the excess molar Gibbs function was derived from the vapour-pressure measurements, and the results were compared with the corresponding behaviour of (water + ethanol) with 2,2,2-trifluoroethanol.

TL;DR: In this paper, a high purity sample of WSe2, containing in total mass fraction less than 1 × 10−4 of oxygen and other impurities, has been synthesized by combination of the elements.

TL;DR: Partial-molar-volume and isentropic-compressibility measurements in water are reported for a systematically chosen series of organic N-bases and their conjugate Bronsted-acid ions so as to investigate the role of the structures of these molecules in their interactions with the water solvent in the ionized and unionized states as discussed by the authors.

TL;DR: In this paper, the authors measured critical p(T) curves for 12 mixtures: helium, hydrogen, nitrogen, argon, carbon monoxide, sulfur hexafluoride, ethene, propene, methylpropene, benzene, cyclohexane, and methanol + ammonia.

TL;DR: In this paper, the excess molar enthalpies of (propan-1-ol + acetonitrile), (Propan-2-ol+ acetonititrile, (proport-1)-ol + chlorobenzene, and (proposition-2)-ol+ chlorobensene at 298.15 K, measured in an isothermal dilution calorimeter, are presented.