Heat Capacity and Standard Thermodynamic Functions of the Wulfenite PbMoO4 over the Temperature Range of (0 to 320) K
Bissengaliyeva, M. R.[Mira R.], Gogol, D. B.[Daniil B.], Bekturganov, N. S.[Nuraly S.], Taimassova, S. T.[Shynar T.], Bespyatov, M. A.[Michael A.], Zhusipov, A. A.[Abdrazak A.]
The heat capacity of natural lead molybdate (wulfenite, PbMoO4) has been measured by the method of vacuum adiabatic calorimetry over the temperature range of (4.3 to 80) K, and its thermodynamic functions in the range from (0 to 320) K have been calculated. The obtained standard values are as follows: Cpo(298.15) = (119.4 +- 0.13) J*mol-1*K-1, Sdeg (298.15) = (161.5 +- 0.3) J*mol-1*K-1, and ?Hdeg (298.15) = (23018 +- 23) J*mol-1. The experimental data have been compared with the calculated values of the heat capacity obtained previously by different methods. The greatest correspondence of the thermodynamic functions has been obtained when employing the method of interatomic potentials using the computer program LADY.
Compounds
#
Formula
Name
1
MoO4Pb
lead(II) molybdenum(VI) oxide
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
Temperature, K; Crystal
Pressure, kPa; Crystal
Crystal
VADIAC:UFactor:4
154
POMD
1
Molar heat capacity at constant pressure, J/K/mol ; Crystal
Temperature, K; Crystal
Pressure, kPa; Crystal
Crystal
VADIAC:UFactor:4
16
POMD
1
Molar enthalpy function {Hm(T)-Hm(0)}/T, J/K/mol ; Crystal