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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 paper , a formulation representation of the molar Gibbs free energy for sulfur dioxide (SO2) was proposed, which depends only on experimental values of six molecular constants of SO2, whereas the conventional explicit representations contain many adjustable coefficients determined from fitting a great number of experimental spectroscopic data or calorimetric data.
24 citations
TL;DR: In this article, the temperature, molar enthalpy, and molar entropy of triphenylethene were determined to be (340.95±0.02) kJ·mol−1, (20.6± 0.1) J·K−1·m−1.
24 citations
TL;DR: In this paper, the configurational entropy of pressure amorphized low-density and hyperquenched glassy water is analyzed in terms of configural entropy, showing that the isothermal interconversion of low and high-density forms of pressure-amorphized ice is of first order thermodynamically.
Abstract: Mishima’s recent data [J. Chem. Phys. 100, 5910 (1994)], showing that the isothermal interconversion of low‐ and high‐density forms of pressure amorphized ice is of first order thermodynamically, have been analyzed in terms of the configurational entropy. At the equilibrium pressure of 2 kbar and 135 K, the entropy of transformation is zero or negligible so that the configurational entropy of the two forms is about the same. This distinguishes the low‐density form (whose entropy is about 3J/mol/K higher than that of hexagonal ice) from the hyperquenched glassy water. Comparison of calorimetric and relaxation behaviors of the pressure‐amorphized low density and hyperquenched glassy water also indicates that their structures differ. Reasons for this difference are given and the low magnitude of the residual entropy of glassy water is discussed. It is argued that model‐based calculations of residual entropy do not yield a plausible value for liquids.
24 citations
TL;DR: In this article, the Redlich-Mayer equation was used to evaluate infinite dilution apparent molar volume, V φ ∞, and energy barrier, E were calculated from the experimental data, showing that the energy barrier values decrease with the drop of IL mass fraction in both systems, indicating that the viscosity changes of binary mixtures are more sensitive to the high composition of the IL.
24 citations
TL;DR: In this paper, the authors studied the thermodynamic properties of heptacyclo [6.14]tetradecane (HCTD) and found that the molar enthalpy of combustion, found in five experiments is Δ c H o m (cr, 298.15 K) = -(77.99 ± 0.38) kJ·mol -1.
24 citations