Results 241 to 250 of about 80,336 (288)
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On the enthalpy of vaporization of isomeric butanols
The Journal of Chemical Thermodynamics, 1984Abstract The paper reports new experimental enthalpies of vaporization for 2-methylpropanol in the range from 298.15 to 358.2 K, and for 2,2-dimethylethanol in the range from 303.15 to 368.2 K. All available experimental enthalpies of vaporization for four isomeric butanols have been collected, their accuracies have been assessed, and parameters of a
V. Majer, V. Svoboda, V. Hynek
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Enthalpies of vaporization of seven alkylamides
Fluid Phase Equilibria, 1985Abstract Enthalpies of vapirazation of formamide and six mono- and disubstituted N—alkylamides have been determined at 298.15 K, using a miniaturized effusion cell adapted to a commercial LKB microcalorimeter. The values obtained were consistent with those of other laboratories for other amides.
G. Barone +4 more
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Estimation of vapor and liquid enthalpies
AIChE Journal, 1965AbstractThe Lydersen‐Greenkorn‐Hougen (L‐G‐H) charts correlating the isothermal pressure effects on enthalpy for pure compounds based on a modified corresponding states principle have been improved with the aid of reliable literature data. To facilitate machine computations, the improved charts, divided into the superheated vapor region, the subcooled ...
Lewis C. Yen, R. E. Alexander
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The Journal of Organic Chemistry, 1991
Enthalpies of vaporization of homologous series n-RY (Y=H, Cl, Br I, OH, SH, NH 2 , CN COOH. QAc, and COOMe) or n-R 1 YR 2 -n (Y=O, S, NH, CO) have been correlated with the respective carbon numbers or sums of carbon numbers. These correlations imply that enthalpies of vaporization of any two series are linearly related to each other.
Screttas, Constantinos G. +1 more
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Enthalpies of vaporization of homologous series n-RY (Y=H, Cl, Br I, OH, SH, NH 2 , CN COOH. QAc, and COOMe) or n-R 1 YR 2 -n (Y=O, S, NH, CO) have been correlated with the respective carbon numbers or sums of carbon numbers. These correlations imply that enthalpies of vaporization of any two series are linearly related to each other.
Screttas, Constantinos G. +1 more
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Vapor pressure and enthalpy of vaporization of linear aliphatic alkanediamines
The Journal of Chemical Thermodynamics, 2011Vapor pressures and the molar enthalpies of vaporization of the linear aliphatic alkanediamines H 2 N–(CH 2 ) n –NH 2 with n = (3 to 12) have been determined using the transpiration method. A linear correlation of enthalpies of vaporization (at T = 298.15 K) of the alkanediamines with the number n and with the Kovat’s indices has been found ...
Vasiliy A. Pozdeev, Sergey P. Verevkin
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Chinese Journal of Chemical Engineering, 2014
Abstract The vapor pressures of n -butyl carbamate were measured in the temperature range from 372.37 K to 479.27 K and fitted with Antoine equation. The compressibility factor of the vapor was calculated with the Virial equation and the second virial coefficient was determined by the Vetere model.
Zuoxiang Zeng +3 more
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Abstract The vapor pressures of n -butyl carbamate were measured in the temperature range from 372.37 K to 479.27 K and fitted with Antoine equation. The compressibility factor of the vapor was calculated with the Virial equation and the second virial coefficient was determined by the Vetere model.
Zuoxiang Zeng +3 more
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Calculating the Enthalpy of Vaporization for Ionic Liquid Clusters
The Journal of Physical Chemistry B, 2007Classical atomistic simulations are used to compute the enthalpy of vaporization of a series of ionic liquids composed of 1-alkyl-3-methylimidazolium cations paired with the bis(trifluoromethylsulfonyl)imide anion. The calculations show that the enthalpy of vaporization is lowest for neutral ion pairs. The enthalpy of vaporization increases by about 40
Manish S, Kelkar, Edward J, Maginn
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Thermochimica Acta, 2004
Molar enthalpies of sublimation of 1,2,4-, 1,2,3-, and 1,3,5-tri-hydroxy-benzene, were obtained from the temperature dependence of the vapor pressure measured by the transpiration method. The molar enthalpies of fusion and molar heat capacities of these compounds were measured by DSC.
Sergey P Verevkin, Christoph Schick
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Molar enthalpies of sublimation of 1,2,4-, 1,2,3-, and 1,3,5-tri-hydroxy-benzene, were obtained from the temperature dependence of the vapor pressure measured by the transpiration method. The molar enthalpies of fusion and molar heat capacities of these compounds were measured by DSC.
Sergey P Verevkin, Christoph Schick
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Estimating Enthalpy of Vaporization from Vapor Pressure Using Trouton's Rule
Environmental Science & Technology, 2007The enthalpy of vaporization of liquids and subcooled liquids at 298 K (delta H(VAP)) is an important parameter in environmental fate assessments that consider spatial and temporal variability in environmental conditions. It has been shown that delta H(VAP)P for non-hydrogen-bonding substances can be estimated from vapor pressure at 298 K (P(L)) using ...
MacLeod M, Scheringer M, Hungerbühler K
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Determination of vapor pressures and enthalpies of vaporization of 1,2-alkanediols
Fluid Phase Equilibria, 2004Molar enthalpies of vaporization of 1,2-ethanediol, 1,2-propanediol, 1,2-butanediol, 1,2-pentanediol, 1,2-hexanediol, and 1,2-octanediol were obtained from the temperature dependence of the vapor pressure measured by the transpiration method. The measured data sets were successfully checked for internal consistency.
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