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Thermodynamic Data for Synthetic Dawsonite (NaAlCO3(OH)2).

PB252996

Publication Date	1976
Personal Author	Ferrante, M. J.; Stuve, J. M.; Richardson, D. W.
Page Count	20
Abstract	The standard enthalpy of formation, low-temperature heat capacities, and enthalpy increments above 298 K were determined calorimetrically for synthetic dawsonite (NaAlCO3(OH)2). The standard enthalpy of formation was determined by hydrochloric acid solution calorimetry, to be minus 469.4 plus or minus 0.7 kcal/mole. Low-temperature heat capacities were determined by adiabatic calorimetry. Tabulated values are given from 3 to 298 K for heat capacity, entropy, and enthalpy relative to zero. The derived standard entropy at 298 K was 31.55 plus or minus 0.3 cal/deg mole. High-temperature enthalpy increments above 298 K were obtained by copper-block drop calorimetry. Tabular data are given from 298 to 477 K for heat capacity, entropy, enthalpy relative to 298 K, Gibbs energy function, enthalpy of formation, Gibbs energy of formation, and equilibrium constant of formation. Enthalpies and Gibbs energies of decomposition are also reported.
Keywords	Thermodynamic properties Metallurgy Gibbs free energy Enthalpy Specific heat Heat measurement Entropy Decomposition Heat of formation Heat of solution Aluminum ores Aluminates Dawsonite
Source Agency	Bureau of Mines
NTIS Subject Category	99F - Physical & Theoretical Chemistry 71N - Nonferrous Metals & Alloys
Corporate Authors	Bureau Of Mines, Albany, Oreg. Albany Metallurgy Research Center.
Document Type	Technical Report
Title Note	Rept. of investigations 1976.
NTIS Issue Number	197615

Thermodynamic Data for Synthetic Dawsonite (NaAlCO3(OH)2).

Thermodynamic Data for Synthetic Dawsonite (NaAlCO3(OH)2).
PB252996

Publication Date	1976
Personal Author	Ferrante, M. J.; Stuve, J. M.; Richardson, D. W.
Page Count	20
Abstract	The standard enthalpy of formation, low-temperature heat capacities, and enthalpy increments above 298 K were determined calorimetrically for synthetic dawsonite (NaAlCO3(OH)2). The standard enthalpy of formation was determined by hydrochloric acid solution calorimetry, to be minus 469.4 plus or minus 0.7 kcal/mole. Low-temperature heat capacities were determined by adiabatic calorimetry. Tabulated values are given from 3 to 298 K for heat capacity, entropy, and enthalpy relative to zero. The derived standard entropy at 298 K was 31.55 plus or minus 0.3 cal/deg mole. High-temperature enthalpy increments above 298 K were obtained by copper-block drop calorimetry. Tabular data are given from 298 to 477 K for heat capacity, entropy, enthalpy relative to 298 K, Gibbs energy function, enthalpy of formation, Gibbs energy of formation, and equilibrium constant of formation. Enthalpies and Gibbs energies of decomposition are also reported.
Keywords	Thermodynamic properties Metallurgy Gibbs free energy Enthalpy Specific heat Heat measurement Entropy Decomposition Heat of formation Heat of solution Aluminum ores Aluminates Dawsonite
Source Agency	Bureau of Mines
NTIS Subject Category	99F - Physical & Theoretical Chemistry 71N - Nonferrous Metals & Alloys
Corporate Authors	Bureau Of Mines, Albany, Oreg. Albany Metallurgy Research Center.
Document Type	Technical Report
Title Note	Rept. of investigations 1976.
NTIS Issue Number	197615