Calculation of lattice energies and enthalpies of formation of rare-earth pyrosilicates
โ Scribed by Michael H. O'Brien; Mufit Akinc
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 506 KB
- Volume
- 84
- Category
- Article
- ISSN
- 0022-4596
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๐ SIMILAR VOLUMES
HoAu2 and TbAu, were determined by means of high-temperature Kundsen-cell mass spectrometry as 143.9 i 8, 131.1 \* 8 and 143.3 \* 8 kcal mole-', respectively. -The measuied itoinization energies suggest the structure AuLnAu. They agree with the values calculated after the Pa&g model hi assuming two
The standard molar enthalpy of solution of CeBr3(s) in 0.25 molโขdm -3 HCl(aq) has been measured. From that value, combined with auxiliary values, the standard molar enthalpy of formation has been derived: DfHยฐm{CeBr3,s, 298.15 K}=-(891.421.0) kJโขmol -1 .
The standard molar enthalpies of solution of CeCl3(s) in HCl(aq) of concentration 0.234 molโขdm -3 , and LaCl3(s) in HCl(aq) of concentration 1.006 molโขdm -3 have been measured. From these values the standard molar enthalpies of formation have been derived: DfHยฐm(CeCl3,s,298.15 K) = -(1060.5 2 0.5) k