Molar heat capacities of the azeotropic mixture in the binary system {water (x = 0.568) + n-propanol (x = 0.432)}were measured with an adiabatic calorimeter in the temperature range from (80 to 320) K. The functions of the heat capacity with respect to the thermodynamic temperature were established. A glass transition was observed at 102.037 K. The solid-liquid-phase transition of the azeotropic mixture took place in the temperature range from (237.075 to 262.424) K. The corresponding enthalpy and entropy of the solid-liquid-phase transition were calculated to be 5.869 kJ?mol-1 and 22.73 J.K-1.mol-1, respectively. The thermodynamic functions and the excess thermodynamic functions of the azeotropic mixture relative to a temperature of 298.15 K were derived on the basis of the relationships of the thermodynamic functions and the function of the measured heat capacity with respect to temperature.
Compounds
#
Formula
Name
1
H2O
water
2
C3H8O
propan-1-ol
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
2
1
Molar heat capacity at constant pressure, J/K/mol ; Liquid