Experimentally determined standard thermodynamic properties of synthetic MgSO(4)·4H(2)O (Starkeyite) and MgSO(4)·3H(2)O: a revised internally consistent thermodynamic data set for magnesium sulfate hydrates.
Astrobiology
; 12(11): 1042-54, 2012 Nov.
Article
em En
| MEDLINE
| ID: mdl-23095098
ABSTRACT
The enthalpies of formation of synthetic MgSO(4)·4H(2)O (starkeyite) and MgSO(4)·3H(2)O were obtained by solution calorimetry at T=298.15 K. The resulting enthalpies of formation from the elements are [Formula see text] (starkeyite)=-2498.7±1.1 kJ·mol(-1) and [Formula see text] (MgSO(4)·3H(2)O)=-2210.3±1.3 kJ·mol(-1). The standard entropy of starkeyite was derived from low-temperature heat capacity measurements acquired with a physical property measurement system (PPMS) in the temperature range 5 K
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Base de dados:
MEDLINE
Assunto principal:
Sulfato de Magnésio
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article