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Standard molar entropy
About: Standard molar entropy is a research topic. Over the lifetime, 1586 publications have been published within this topic receiving 29886 citations.
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TL;DR: In this article, the experimental and calculated values of the entropy of gaseous caprolactam agree with each other within 0.2 % at 298 K. The authors also measured the vapor pressure of the liquid phase between T = (345 and 373) K.
Abstract: The vapor pressure for crystalline e-caprolactam (CAS Registry No. 105602) was measured by the Knudsen method in the temperature range (293 to 338) K with a modified effusion cell with enlarged sublimation surface and by the transpiration method between T = (302 and 339) K. The latter method was also used to measure the vapor pressures of the liquid phase between T = (345 and 373) K. The thermodynamic parameters of sublimation and of vaporization and the standard entropy of caprolactam in the ideal gas state were estimated from the obtained data. Calculations of the thermodynamic properties of caprolactam in the ideal gas state were carried out based on the molecular data and the results obtained by DFT (B3LYP/6-311G*) quantum-mechanical calculations. The experimental and calculated values of the entropy of gaseous caprolactam agree with each other within 0.2 % at 298 K.
21 citations
TL;DR: The ion exchange and sorption properties of crystalline Tin bis(monohydrogen orthophosphate) monohydrate of composition Sn(HPO(4))(2).H(2)O were studied in an aqueous solution of KCl over the temperature range 300-320 K, varying the pH and metal ion concentration in the solution.
21 citations
TL;DR: In this article, it was shown that the total strain energy of pentacyclo[5.05,9]undecane is the sum of the strain energies in the independent rings which comprise the compound.
21 citations
TL;DR: The citrate-nitrate gel combustion route was used to prepare SrFe12O19(s) powder sample and the compound was characterized by X-ray diffraction analysis.
21 citations
TL;DR: In this paper, the heat capacity of copper hydride has been measured in the temperature range 2-60 and 60-250 K using two adiabatic calorimeters.
21 citations