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Oxalic acid

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Gas phase thermochemistry data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Glushko Thermocenter, Russian Academy of Sciences, Moscow

Constant pressure heat capacity of gas

Cp,gas (J/mol*K) Temperature (K) Reference Comment
38.4050.Dorofeeva O.V., 1997p=1 bar.
45.04100.
54.32150.
65.10200.
85. ± 5.298.15
85.52300.
102.17400.
115.25500.
125.47600.
133.54700.
140.04800.
145.36900.
149.791000.
153.531100.
156.711200.
159.441300.
161.801400.
163.841500.

Condensed phase thermochemistry data

Go To: Top, Gas phase thermochemistry data, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Deltafsolid-828.93 ± 0.46kJ/molCmBrown, 1969ALS
Deltafsolid-829.94 ± 0.96kJ/molCcbWilhoit and Shiao, 1964ALS
Quantity Value Units Method Reference Comment
Deltacsolid-242.9 ± 0.92kJ/molCcbWilhoit and Shiao, 1964Corresponding «DELTA»fsolid = -829.94 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Deltacsolid-253.5 ± 0.46kJ/molCcbVerkade, Hartman, et al., 1926Reanalyzed by Cox and Pilcher, 1970, Original value = -251. kJ/mol; See Verkade, Hartman, et al., 1924; Corresponding «DELTA»fsolid = -819.35 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
solid,1 bar115.6J/mol*KN/ALuff and Reed, 1982DH

Constant pressure heat capacity of solid

Cp,solid (J/mol*K) Temperature (K) Reference Comment
105.9298.15Luff and Reed, 1982T = 5 to 320 K.; DH
146.340.David, 1964T = 298 to 373 K. Mean value. T = uncertain.; DH
118.0323.Satoh and Sogabe, 1939T = 0 to 100°C. Mean value given.; DH
120.1298.1Parks, Kelley, et al., 1929Extrapolation below 90 K, 38.49 J/mol*K. Revision of previous data.; DH

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Dorofeeva O.V., 1997
Dorofeeva O.V., Unpublished results. Thermocenter of Russian Academy of Science, Moscow, 1997. [all data]

Brown, 1969
Brown, M.A.H., The heats of formation of selected cyanide and oxalate compounds, Diss. Abstr., 1969, 29, 3696. [all data]

Wilhoit and Shiao, 1964
Wilhoit, R.C.; Shiao, D., Thermochemistry of biologically important compounds. Heats of combustion of solid organic acids., J. Chem. Eng. Data, 1964, 9, 595-599. [all data]

Verkade, Hartman, et al., 1926
Verkade, P.E.; Hartman, H.; Coops, J., Calorimetric researches. X. Heats of combustion of successive terms of homologous series: dicarboxylic acids of the oxalic acid series, Rec. Trav. Chim. Pays/Bas, 1926, 45, 373-393. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]

Verkade, Hartman, et al., 1924
Verkade, P.E.; Hartman, H.; Coops, J., Jr., Chemistry - The molecular heat of combustion of successive terms of homologous series, Kom. Med. Akad. Ueknschap. Proc., 1924, 27, 859-866. [all data]

Luff and Reed, 1982
Luff, B.B.; Reed, R.B., Low-temperature heat capacity and entropy of oxalic acid and of biuret, J. Chem. Eng. Data, 1982, 27, 290-292. [all data]

David, 1964
David, D.J., Determination of specific heat and heat of fusion by differential thermal analysis. Study of theory and operating parameters, Anal. Chem., 1964, 36, 2162-2166. [all data]

Satoh and Sogabe, 1939
Satoh, S.; Sogabe, T., The specific heats of some solid aliphatic acids and their ammonium salts and the atomic heat of nitrogen, Sci. Pap. Inst. Phys. Chem. Res. (Tokyo), 1939, 36, 97-105. [all data]

Parks, Kelley, et al., 1929
Parks, G.S.; Kelley, K.K.; Huffman, H.M., Thermal data on organic compounds. V. A revision of the entropies and free energies of nineteen organic compounds, J. Am. Chem. Soc., 1929, 51, 1969-1973. [all data]


Notes

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