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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 solid-state galvanic cell in the temperature range 700 to 970 deg C was used to measure the free energy of formation of ThC/sub 2/ at 800 deg C.
Abstract: A solid-state galvanic cell in the temperature range 700 to 970 deg C was used to measure the free energy of formation of ThC/sub 2/. At 800 deg C the standard molar free energy of formation of ThC/sub 2/ is -29.4 plus or minus 0.3 kcal/mole. The entropy and heat of formation of ThC/sub 2/ were estimated from the results to be -7.2 eu and -37.1 kcal/mole, respectively in the temperature range of the experiments. (P.C.H.)
29 citations
TL;DR: In this paper, the standard entropy of formation of nickel hydride is evaluated and compared with the previous result obtained from the measured free energy and enthalpy of formation, which seem to follow a simple minimum polarity model.
29 citations
TL;DR: In this article, a pseudo-binary Mg 6 Pd 0.5 Ni 0.4 intermetallic compound (IMC) is presented, which disproportionates reversibly on hydrogenation into MgH 2, Mg 5 Pd 2 and Mg 2 NiH 4 compounds.
29 citations
TL;DR: The thermal expansion coefficient, molecular volume, standard entropy, and lattice energy of the pure ionic liquid 1,1,3,3-tetramethylguanidine imidazole ([TMG]IM) and its binary mixtures with methanol, ethanol, 1-propanol, and 1-butanol were measured at temperatures from T ǫ = (293.15 to 313.15) K as discussed by the authors.
29 citations
TL;DR: In this article, the thermodynamics of redox equilibria were studied by squarewave-voltammetry in a borosilicate glass melt at temperatures in the range of 700 to 1100°C.
Abstract: The thermodynamics of redox equilibria were studied by square-wave-voltammetry in a borosilicate glass melt at temperatures in the range of 700 to 1100°C. The glass melts were doped with oxides of As, Sb, Bi, Te, Sn and Pb. While lead and bismuth are reduced in one redox step to the metallic state, glass melts doped with the other elements have two well separated redox steps. Standard potentials linearly depend on temperature and hence both the standard enthalpy and the standard entropy are constant. The electrochemical series of elements is nearly the same as that reported in soda–lime–silica glass melts. With the exception of the Pb2+/Pb0-redox step, all standard potentials in the borosilicate glass melt are notably shifted to more negative potentials by comparison with those reported from soda–lima–silica glass melts.
29 citations