Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Heat capacities and thermodynamic functions of hexagonal ice from T = 0.5 K to T = 38 K

Smith, S. J.[Stacey J.], Lang, B. E.[Brian E.], Liu, S.[Shengfeng], Boerio-Goates, J.[Juliana], Woodfield, B. F.[Brian F.]
J. Chem. Thermodyn. 2007, 39, 5, 712-716
ABSTRACT
The heat capacity of water in the form of hexagonal ice was measured between T = 0.5 K and T = 38 K using a semi-adiabatic calorimetric method. Since heat capacity data below T = 2 K have never been measured for water, this study presents the lowest measured values of the specific heat of water to date. Fits of the data were used to generate thermodynamic functions of water at smoothed temperatures between 0.5 K and 38 K. Both our experimental heat capacities and calculated enthalpy increments agree well with previously published values and thus supplement other studies well.
Compounds
# Formula Name
1 H2O water
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
  • Low-temperature adiabatic
  • 117
  • POMD
  • 1
  • Molar heat capacity at constant pressure, J/K/mol ; Crystal
  • Temperature, K; Crystal
  • Pressure, kPa; Crystal
  • Crystal
  • adiabatic
  • 39
  • POMD
  • 1
  • Molar enthalpy function {Hm(T)-Hm(0)}/T, J/K/mol ; Crystal
  • Temperature, K; Crystal
  • Pressure, kPa; Crystal
  • Crystal
  • semi-adiabatic calorimetry
  • 39
  • POMD
  • 1
  • Molar entropy, J/K/mol ; Crystal
  • Temperature, K; Crystal
  • Pressure, kPa; Crystal
  • Crystal
  • adiabatic
  • 39