Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Standard molar enthalpies of formation of sodium alkoxides

Chandran, K., Srinivasan, T. G., Gopalan, A., Ganesan, V.
J. Chem. Thermodyn. 2007, 39, 3, 449-454
ABSTRACT
The molar enthalpies of solution of sodium in methanol, ethanol, and n-propanol and of sodium alkoxides in their corresponding alcohols were measured at T = 298.15 K using an isoperibol solution calorimeter. From these results and other auxiliary data, the standard molar enthalpies of formation DfH moRONa; crP of sodium methoxide, sodium ethoxide, and sodium n-propoxide were calculated and found to be {( 366.21 +- 1.38), ( 413.39 +- 1.45), and ( 441.57 +- 1.18)} kJ Ae mol 1, respectively. A linear correlation has been found between DfH moRONaP and DfH moROHP for R = n-alkyl, enabling the prediction of data for other sodium alkoxides.
Compounds
# Formula Name
1 Na sodium
2 CH4O methanol
3 C2H6O ethanol
4 C3H8O propan-1-ol
5 CH3NaO methanol, sodium salt
6 C2H5NaO sodium ethoxide
7 C3H7NaO sodium 1-propanolate
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 enthalpy of solution, kJ/mol ; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • ISOPERIBOL
  • 1
  • POMD
  • 3
  • 1
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • ISOPERIBOL
  • 1
  • POMD
  • 4
  • 1
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • ISOPERIBOL
  • 1
  • POMD
  • 2
  • 5
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Mole fraction - 5; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • ISOPERIBOL
  • 1
  • POMD
  • 3
  • 6
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Mole fraction - 6; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • ISOPERIBOL
  • 1
  • POMD
  • 4
  • 7
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Mole fraction - 7; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • ISOPERIBOL
  • 1