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'Enthalpy' in keywords

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1	Author	H. Oppermann, A. Morgenstern	Requires cookie*
	Title	Verdampfungsverhalten von Lanthantrihalogeniden Evaporation Behaviour o f Lanthanum Trihalides
	Abstract	The evaporation of LaCl3, LaBr3 and Lal3 was investigated in closed tubes under argon atmosphere and correlated with data in the literature. The enthalpies and entropies of evaporation were derived from the temperature functions of pressure: -AH°(v, LaCl3, T) = 48,5 ± 2 kcal/mol, Z\S°(v, LaCl3, T) = 22,0 ± 3 cal/K-mol _AH°(v, LaBr3, T) = 48,0 ± 2 kcal/mol, Z\S°(v, LaBr3, T) = 24,0 ± 2 cal/K-mol J H ° (v , L al3, T) = 49,5 ± 2 kcal/mol, Z\S°(v, L al3, T) = 29,0 ± 2 cal/K-mol
	Reference	Z. Naturforsch. 54b, 617—623 (1999); eingegangen am 11. Februar 1999
	Published	1999
	Keywords	Lanthanum Trihalides, Evaporation, Enthalpy, Entropy
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	TEI-XML for	default:Reihe_B/54/ZNB-1999-54b-0617.pdf
	Identifier	ZNB-1999-54b-0617
	Volume	54

2	Author	H. Oppermann, H. Dao Quoc, M. Zhang-Preße	Requires cookie*
	Title	Thermical and Calorical Behaviour of Solid LaAl3Br12 and Chemical Transport of LaBr3 with AlBr3
	Abstract	The thermodynamical data of solid Lanthanum Aluminium Bromide LaAl3 Br12 have been obtained by determination of the decomposition equilibria from total pressure measurements. For different compositions LaBr3 /AlBr3, the barogram of the binary system LaBr3 -AlBr3 was constructed and from this and DTA the melting diagram was determined. The chemical trans port of LaBr3 with AlBr3 is suggesting the existence of two gaseous complexes LaAl3 B r12 and LaAl?Br9. The data are: Z\H°B(LaAl3B rl2,f,298) = -587,2 ± 7 kcal/mol, S°(LaAl3Br12,f,298) = 179,3 ± 7 cal/Kmol; zAH°B(LaAl3B r12,g,298) = -548,7 ± 5 kcal/mol, S°(LaAl,Br12,g,298) = 239,4 ± 6 cal/K mol; Z\H°B(LaAl2Br9,g,298) = -619,7 ± 5,5 kcal/mol, S°(LaAl2Br9,g,298) = 212,0 ± 7 cal/K mol. From solution calorimetric measurements follows the enthalpy of formation of the solid com plexes: zAH°B(LaAl3Br12,f,298) = -590,9 ± 3 kcal/mol. Thermisches und kalorisches Verhalten von festem LaAl3Br12
	Reference	Z. Naturforsch. 56b, 908—916 (2001); eingegangen am 10. Mai 2001
	Published	2001
	Keywords	Lanthanum Alumimium Bromide, Calorimetry, Enthalpy
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	TEI-XML for	default:Reihe_B/56/ZNB-2001-56b-0908.pdf
	Identifier	ZNB-2001-56b-0908
	Volume	56

3	Author	G. Anderegg	Requires cookie*
	Title	Komplexone, XLVII Die Thermodynamik der Komplexbildung von einigen ein-und zweiwertigen Metallionen mit Aethylendiamintetraacetat-und Uramildiacetat-Ion Complexone, XLVII Thermodynamics of Complex Formation of Some Univalent and Bivalent Metal Ions with Ethylenediaminetetraacetate and Uramildiacetate Anions
	Abstract	The enthalpies of complex formation of EDTA and uramildiacetate (UDA) with univalent cations (H+, Li+, Na+, K + , Ag+ and T1+) have been obtained by direct calori-metric measurements at ionic strength 0.1 (or 1) and 20 °C. For comparison data for the formation of 1:1 UDA complexes with Mg 2+ , Ca 2+ , Ba 2+ and Sr 2+ have also been obtained. From these values and the stability constants the thermodynamic functions A G and A S are calculated. The results are compared with those of similar systems.
	Reference	(Z. Naturforsch. 31b, 786—789 [1976]; eingegangen am 15. März 1976)
	Published	1976
	Keywords	EDTA Complexes, Uramildiacetate Complexes, Stability Constants, Enthalpy, Entropy
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	TEI-XML for	default:Reihe_B/31/ZNB-1976-31b-0786.pdf
	Identifier	ZNB-1976-31b-0786
	Volume	31

4	Author	H. Oppermann, M. Zhang, C. Hennig, HeinzDieter Lutz	Requires cookie*
	Title	Thermochemisches und kalorisches Verhalten von NdA^Cl^ Thermochemical and Calorical Behaviour of NdAl3C l12
	Abstract	The thermodynamical data of solid and gaseous aluminium neodymium chloride have been obtained by determination of the decomposition equilibria (of solid) from total pressure mea surements and chemical transport reactions (gaseous). The melting diagram was determined by DTA. The enthalpy of formation of the solid phase was calculated from their heats of solution and from the enthalpies of formation and the heats of solution of NdCl3 and A1C13. Data by total pressure measurement: ^ H \|(N d A l3Cl,2<f<298) = -749,6 ± 2,5 kcal/mol; S°(NdAl3C l12ifj298) = 118,2 ± 3,0 cal/K-mol. Data by solution calorimetry: zAHß(NdAl3C l\|2 1298) = -748,6 ± 1,3 kcal/mol. Data by chemical transport: zAH£(NdAl3C l12>g,298) = -701,5 ± 3,0 kcal/mol; S°(NdAl3Cl12-g,298) = 215,0 ± 4,0 cal/K-mol.
	Reference	Z. Naturforsch. 53b, 1343—1351 (1998); eingegangen am 21. Juli 1998
	Published	1998
	Keywords	Aluminium Neodymium Chloride, Decomposition, Thermochemical Data, Enthalpy, Entropy
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	TEI-XML for	default:Reihe_B/53/ZNB-1998-53b-1343.pdf
	Identifier	ZNB-1998-53b-1343
	Volume	53

5	Author	H. Oppermann, H. Dao Quoc, A. Morgenstern, Prof Manfred	Requires cookie*
	Title	Thermisches Verhalten von festem LaAlCl6 und chemischer Transport von LaCl3 mit AICI3 Thermical Behaviour of Solid LaAlCl6 and Chemical Transport of LaCl3 with A1C13
	Abstract	The thermodynamical data of solid aluminium lanthanum chloride LaAlCl6 have been ob tained by determination of the decomposition equilibria from total pressure measurements. The melting diagram was determined by DTA. The chemical transport of LaCl3 with A1C13 is suggesting the existence of the gaseous complex LaAl3C l12. The data are: Z\H(LaAlCl6 f 298) =-427,1 ±2,5 kcal/mol, S°(LaAlCl6.f.298) = 61 ±2,5 cal/K-mol, _AH(LaAl3C l12 g 298) =-712 ± 7 kcal/mol, S°(LaAl3C l12>g,298) = 205 ± 3 cal/K-mol.
	Reference	Z. Naturforsch. 54b, 1410—1416 (1999); eingegangen am 15. Juli 1999
	Published	1999
	Keywords	Aluminium Lanthanum Chloride, Thermal Decomposition, Chemical Transport, Enthalpy, Entropy
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	TEI-XML for	default:Reihe_B/54/ZNB-1999-54b-1410.pdf
	Identifier	ZNB-1999-54b-1410
	Volume	54