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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, a new thermodynamic description of the Al-Mn-O system has been derived within the CALPHAD approach using own experimental data on the phase equilibria and available experimental data for the degree of inversion of stoichiometric spinel Al2MnO4, standard entropy, and its Gibbs energy of formation from oxides.
TL;DR: The heat capacity of the cubic form of potassium hexafluoroantimonate (V) has been measured from 21 to 284 K as mentioned in this paper, and there are no indications of any transition or thermal anomaly in this temperature range.
TL;DR: In this paper, the temperature dependence of the heat capacity of a first-generation liquid crystal carbosilane dendrimer with methoxyphenyl benzoate end groups was studied for the first time in the region of 6-370 K by means of precision adiabatic vacuum calorimetry.
Abstract: The temperature dependence of the heat capacity of a first-generation liquid crystal carbosilane dendrimer with methoxyphenyl benzoate end groups is studied for the first time in the region of 6–370 K by means of precision adiabatic vacuum calorimetry. Physical transformations are observed in this interval of temperatures, and their standard thermodynamic characteristics are determined and discussed. Standard thermodynamic functions Cp°(T), H°(T) − H°(0), S°(T) − S°(0), and G°(T) − H°(0) are calculated from the obtained experimental data for the region of Т → 0 to 370 K. The standard entropy of formation of the dendrimer in the partially crystalline state at Т = 298.15 K is calculated, and the standard entropy of the hypothetic reaction of its synthesis at this temperature is estimated. The thermodynamic properties of the studied dendrimer are compared to those of second- and fourth-generation liquid crystal carbosilane dendrimers with the same end groups studied earlier.