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Formic 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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
Deltafgas-378.6kJ/molCmGuthrie, 1974Heat of hydrolysis; ALS
Deltafgas-379.0kJ/molN/ALebedeva, 1964Value computed using «DELTA»fHliquid° value of -425.5±0.3 kj/mol from Lebedeva, 1964 and «DELTA»vapH° value of 46.5 kj/mol from Guthrie, 1974.; DRB
Deltafgas-379.2 ± 0.6kJ/molCcbLebedeva, 1964Value computed using «DELTA»fHliquid° from Lebedeva, 1964 and «DELTA»vapH° value of 46.3 kJ/mol from Konicek and Wadso, 1970.; DRB
Deltafgas-378.3kJ/molN/ASinke, 1959Value computed using «DELTA»fHliquid° value of -424.8±0.3 kj/mol from Sinke, 1959 and «DELTA»vapH° value of 46.5 kj/mol from Guthrie, 1974.; DRB
Deltafgas-378.5 ± 0.6kJ/molCcbSinke, 1959Value computed using «DELTA»fHliquid° from Sinke, 1959 and «DELTA»vapH° value of 46.3 kJ/mol from Konicek and Wadso, 1970.; DRB
Quantity Value Units Method Reference Comment
gas248.70 ± 0.42J/mol*KN/AMillikan R.C., 1957Other third-law S(298.15 K) value is 248.11(1.26) J/mol*K [ Halford J.O., 1942, Millikan R.C., 1957]. Please also see Waring W., 1952.; GT

Constant pressure heat capacity of gas

Cp,gas (J/mol*K) Temperature (K) Reference Comment
33.2650.Chao J., 1986p=1 bar. Selected entropies and heat capacities are in close agreement with statistically calculated values [ Fukushima K., 1971] and value of S(298.15 K) calculated by ab initio method [ East A.L.L., 1997]. Maximum discrepancies with other statistical calculations [ Waring W., 1952, Green J.H.S., 1961, Gurvich, Veyts, et al., 1989] amount to 1.1-3.9 J/mol*K for S(T) and 3.0-5.9 J/mol*K for Cp(T). Please also see Chao J., 1978.; GT
33.44100.
34.91150.
37.83200.
43.54273.15
45.68 ± 0.07298.15
45.84300.
54.52400.
62.63500.
69.81600.
76.04700.
81.34800.
85.77900.
89.401000.
92.331100.
94.651200.
96.481300.
97.911400.
99.021500.

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
Deltafliquid-425.09kJ/molCmGuthrie, 1974Heat of hydrolysis; ALS
Deltafliquid-425.5 ± 0.3kJ/molCcbLebedeva, 1964ALS
Deltafliquid-424.8 ± 0.3kJ/molCcbSinke, 1959ALS
Quantity Value Units Method Reference Comment
Deltacliquid-253.8 ± 0.3kJ/molCcbLebedeva, 1964Corresponding «DELTA»fliquid = -425.51 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Deltacliquid-254.6 ± 0.3kJ/molCcbSinke, 1959Corresponding «DELTA»fliquid = -424.72 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
liquid131.84J/mol*KN/AStout and Fisher, 1941Includes 2.89 J/mol*K for zero-point entropy.; DH
liquid128.4J/mol*KN/AParks, Kelley, et al., 1929Extrapolation below 90 K, 29.7 J/mol*K. Revision of previous data.; DH
liquid143.1J/mol*KN/AGibson, Latimer, et al., 1920Used Berthelot's value, 10125 J/mol for H fusion. Extrapolation below 70 K, no details.; DH

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
99.04298.15Stout and Fisher, 1941T = 15 to 300 K.; DH
98.10298.15Glagoleva and Chervov, 1936Temperature range: 298.15, 333.15, 353.15 K.; DH
100.0290.Radulescu and Jula, 1934DH
98.3291.5Gibson, Latimer, et al., 1920T = 71 to 292 K. Value is unsmoothed experimental datum.; DH
95.4298.von Reis, 1881T = 291 to 385 K.; 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.

Guthrie, 1974
Guthrie, J.P., Hydration of carboxamides. Evaluation of the free energy change for addition of water to acetamide and formamide derivatives, J. Am. Chem. Soc., 1974, 96, 3608-3615. [all data]

Lebedeva, 1964
Lebedeva, N.D., Heats of combustion of monocarboxylic acids, Russ. J. Phys. Chem. (Engl. Transl.), 1964, 38, 1435-1437. [all data]

Konicek and Wadso, 1970
Konicek, J.; Wadso, I., Enthalpies of vaporization of organic compounds. VII. Some carboxylic acids, Acta Chem. Scand., 1970, 24, 2612-26. [all data]

Sinke, 1959
Sinke, G.C., The heat of formation of formic acid, J. Phys. Chem., 1959, 63, 2063. [all data]

Millikan R.C., 1957
Millikan R.C., Infrared spectra and vibrational assignment of monomeric formic acid, J. Chem. Phys., 1957, 27, 1305-1308. [all data]

Halford J.O., 1942
Halford J.O., Entropy of the monomeric forms of formic acid and acetic acid, J. Chem. Phys., 1942, 10, 582-584. [all data]

Waring W., 1952
Waring W., Some thermodynamic properties of formic acid, Chem. Rev., 1952, 51, 171-183. [all data]

Chao J., 1986
Chao J., Thermodynamic properties of key organic oxygen compounds in the carbon range C1 to C4. Part 2. Ideal gas properties, J. Phys. Chem. Ref. Data, 1986, 15, 1369-1436. [all data]

Fukushima K., 1971
Fukushima K., Normal coordinate treatment and thermodynamic properties of the cis-trans isomers of formic acid and its deutero-analog, J. Chem. Thermodyn., 1971, 3, 553-562. [all data]

East A.L.L., 1997
East A.L.L., Ab initio statistical thermodynamical models for the computation of third-law entropies, J. Chem. Phys., 1997, 106, 6655-6674. [all data]

Green J.H.S., 1961
Green J.H.S., Thermodynamic properties of organic oxygen compounds. Part III. Formic acid, J. Chem. Soc., 1961, 2241-2242. [all data]

Gurvich, Veyts, et al., 1989
Gurvich, L.V.; Veyts, I.V.; Alcock, C.B., Thermodynamic Properties of Individual Substances, 4th ed.; Vols. 1 and 2, Hemisphere, New York, 1989. [all data]

Chao J., 1978
Chao J., Ideal gas thermodynamic properties of methanoic and ethanoic acids, J. Phys. Chem. Ref. Data, 1978, 7, 363-377. [all data]

Stout and Fisher, 1941
Stout, J.W.; Fisher, L.H., The entropy of formic acid. The heat capacity from 15 to 300K. Heats of fusion and vaporization, J. Chem. Phys., 1941, 9, 163-168. [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]

Gibson, Latimer, et al., 1920
Gibson, G.E.; Latimer, W.M.; Parks, G.S., Entropy changes at low temperatures. I. Formic acid and urea. A test of the third law of thermodynamics, J. Am. Chem. Soc., 1920, 42, 1533-1542. [all data]

Glagoleva and Chervov, 1936
Glagoleva, A.A.; Chervov, S.I., Investigation of the heat capacity of formic acid and its aqueous solutions, Zhur. Obshch. Khim., 1936, 6, 685-690. [all data]

Radulescu and Jula, 1934
Radulescu, D.; Jula, O., Beiträge zur Bestimmung der Abstufung der Polarität des Aminstickstoffes in den organischen Verbindungen, Z. Phys. Chem., 1934, B26, 390-393. [all data]

von Reis, 1881
von Reis, M.A., Die specifische Wärme flüssiger organischer Verbindungen und ihre Beziehung zu deren Moleculargewicht, Ann. Physik [3], 1881, 13, 447-464. [all data]


Notes

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