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- W2083163944 abstract "Die Gasphase über festem As2O5 wurde bei Temperaturen zwischen 862 und 939 K massenspektrometrisch untersucht. Es wurden gasförmige As4Om-Teilchen (6 ≤ m ≤ 10) und O2 nachgewiesen. Mit Hilfe der Partialdrucke konnten nach dem 2. Hauptsatz Bildungsenthalpien (ΔBH°(900), kJ · mol−1) bestimmt werden (As4O7,g: -1209,5; As4O8,g: -1361,9; As4O9,g: -1495,4; As4O10,g: -1618,8). Die Standardbildungsenthalpie von festem As2O5 wurde zu ΔBH°(298) -1007,9 kJ · mol−1 ermittelt. Mit Hilfe der thermischen Daten der As4Om-Teilchen wurden p/T-Bedingungen für die Darstellung von festem As4O10 abgeschätzt. Mass Spectrometric Investigations of the Gaseous Phase above As2O5 The gaseous phase above solid As2O5 has been investigated in the temperature range between 862 and 939 K by mass spectrometric methods. The presence of gaseous As4Ox-molecules (6 ≤ × ≤ 10) and O2 was proved. Using the partial pressures, heats of formation (ΔfH°(900), kJ · mol−1; 2nd law calculations) were calculated (As4O7,g: -1209,5; As4O8,g: -1361,9; As4O9,g: -1495,4; As4O10,g: -1618,8). The enthalpy of formation of solid As2O5 was determined to be ΔfH°(298) = −1007,9 kJ · mol−1. The thermochemical data of the As4Ox-molecules are discussed in context with possibilities for the synthesis of solid As4O10." @default.
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- W2083163944 date "1983-02-01" @default.
- W2083163944 modified "2023-09-27" @default.
- W2083163944 title "Massenspektrometrische Untersuchungen der Gasphase über As2O5" @default.
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- W2083163944 doi "https://doi.org/10.1002/zaac.19834970217" @default.
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