Thermodynamics Research Center / ThermoML | Thermochimica Acta

The heat capacity and thermodynamic functions of celestine SrSO4

Bissengaliyeva, M. R.[Mira R.], Gogol, D. B.[Daniil B.], Taimassova, S. T.[Shynar T.], Bekturganov, N. S.[Nuraly S.], Bort, A. T.[Asya T.]
Thermochim. Acta 2013, 565, 227-33
ABSTRACT
The heat capacity of natural strontium sulfate - mineral celestine - has been measured over the range of (5-320) K by the method of adiabatic calorimetry and its thermodynamic functions have been determined. The methods of X-ray phase analysis, Raman spectroscopy and electron probe microanalysis have confirmed the adequacy of the sample under investigation to mineral celestine. The standard values of thermodynamic functions were: Cp (298.15)=100.30 }0.11 J/(mol*K), S 298.15=123.44 }0.28 J/(mol*K), cents N 298.15=18406 }33 J/mol. The heat capacity and thermodynamic functions of celestine have also been calculated by means of methods of quantum-chemical calculation and the theory of crystal lattice dynamics.
Compounds
# Formula Name
1 O4SSr sulfuric acid, strontium salt (1:1)
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 1
  • Molar heat capacity at constant pressure, J/K/mol ; Crystal 2
  • Temperature, K; Crystal 2
  • Pressure, kPa; Crystal 2
  • Crystal 2
  • Small (less than 1 g) adiabatic calorimetry
  • 343
  • POMD
  • 1
  • Molar heat capacity at constant pressure, J/K/mol ; Crystal 2
  • Temperature, K; Crystal 2
  • Pressure, kPa; Crystal 2
  • Crystal 2
  • Small (less than 1 g) adiabatic calorimetry
  • 44
  • POMD
  • 1
  • Molar entropy, J/K/mol ; Crystal 2
  • Temperature, K; Crystal 2
  • Pressure, kPa; Crystal 2
  • Crystal 2
  • Small (less than 1 g) adiabatic calorimetry
  • 44
  • POMD
  • 1
  • Molar enthalpy, kJ/mol ; Crystal 2
  • Temperature, K; Crystal 2
  • Pressure, kPa; Crystal 2
  • Crystal 2
  • Small (less than 1 g) adiabatic calorimetry
  • 44