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Hydroquinone

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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-277.0 ± 1.4kJ/molCcrSabbah and Buluku, 1991«DELTA»Hfusion =21.09±0.4 kJ/mol; ALS
Deltafgas-272.0kJ/molN/APilcher and Sutton, 1956Value computed using «DELTA»fHsolid° value of -366.1±1.2 kj/mol from Pilcher and Sutton, 1956 and «DELTA»subH° value of 94.1 kj/mol from Sabbah and Buluku, 1991.; DRB
Deltafgas-268.9kJ/molN/AParks, Manchester, et al., 1954Value computed using «DELTA»fHsolid° value of -363.0±1.0 kj/mol from Parks, Manchester, et al., 1954 and «DELTA»subH° value of 94.1 kj/mol from Sabbah and Buluku, 1991.; DRB
Deltafgas-266.9kJ/molN/APushin, 1954Value computed using «DELTA»fHsolid° value of -361.0 kj/mol from Pushin, 1954 and «DELTA»subH° value of 94.1 kj/mol from Sabbah and Buluku, 1991.; DRB
Deltafgas-268.4kJ/molN/ASchreiner, 1925Value computed using «DELTA»fHsolid° value of -362.5 kj/mol from Schreiner, 1925 and «DELTA»subH° value of 94.1 kj/mol from Sabbah and Buluku, 1991.; DRB
Quantity Value Units Method Reference Comment
gas343.1 ± 5.0J/mol*KN/AKudchadker S.A., 1979GT

Constant pressure heat capacity of gas

Cp,gas (J/mol*K) Temperature (K) Reference Comment
34.5250.Kudchadker S.A., 1979GT
47.69100.
66.48150.
86.13200.
114.40273.15
123.60298.15
124.27300.
157.14400.
183.26500.
203.62600.
219.74700.
232.82800.
243.67900.
252.831000.
260.641100.
267.361200.
273.171300.
278.221400.
282.611500.

Condensed phase thermochemistry data

Go To: Top, Gas phase thermochemistry data, Reaction 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-371.1 ± 1.3kJ/molCcrSabbah and Buluku, 1991«DELTA»Hfusion =21.09±0.4 kJ/mol; ALS
Deltafsolid-366.1 ± 1.2kJ/molCcbPilcher and Sutton, 1956ALS
Deltafsolid-363.0 ± 1.0kJ/molCcbParks, Manchester, et al., 1954ALS
Deltafsolid-361.kJ/molCcbPushin, 1954Author's hf298_condensed=-87.8 kcal/mol; ALS
Deltafsolid-362.5kJ/molCcbSchreiner, 1925ALS
Quantity Value Units Method Reference Comment
Deltacsolid-2850. ± 20.kJ/molAVGN/AAverage of 8 values; Individual data points

Constant pressure heat capacity of solid

Cp,solid (J/mol*K) Temperature (K) Reference Comment
131.90298.15Bret-Dibat and Lichanot, 1989T = 200 to 500 K. Cp(c) = 125.328 + 0.2791t - 1.0329x10-3t2 + 1.5075x10-5t3 J/mol*K (t/°C). Cp value caluculated from equation.; DH
136.4298.15Ueberreiter and Orthmann, 1950T = 293 to 368 K. Equation only.; DH
150.2323.Satoh and Sogabe, 1941T = 0 to 100°C. Mean value.; DH
139.7298.Andrews, Lynn, et al., 1926T = 22 to 200°C.; DH
133.5297.9Andrews, 1926T = 110 to 344 K. Value is unsmoothed experimental datum.; DH
130.5274.3Lange, 1924T = 28 to 275 K. Value is unsmoothed experimental datum.; DH

Reaction 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: John E. Bartmess

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

C6H5O2- + Hydrogen cation = Hydroquinone

By formula: C6H5O2- + H+ = C6H6O2

Quantity Value Units Method Reference Comment
Deltar1466. ± 8.8kJ/molG+TSFujio, McIver, et al., 1981gas phase; value altered from reference due to change in acidity scale
Quantity Value Units Method Reference Comment
Deltar1436. ± 8.4kJ/molIMREFujio, McIver, et al., 1981gas phase; value altered from reference due to change in acidity scale

References

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

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

Sabbah and Buluku, 1991
Sabbah, R.; Buluku, E.N.L.E., Thermodynamic study of three isomers of dihydroxybenzene, Can. J. Chem., 1991, 69, 481-488. [all data]

Pilcher and Sutton, 1956
Pilcher, G.; Sutton, L.E., The heats of combustion of quinol and p-benzoquinone and the thermodynamic quantities of the oxidation-reduction reaction, J. Chem. Soc., 1956, 2695-2700. [all data]

Parks, Manchester, et al., 1954
Parks, G.S.; Manchester, K.E.; Vaughan, L.M., Heats of combustion and formation of some alcohols, phenols, and ketones, J. Chem. Phys., 1954, 22, 2089-2090. [all data]

Pushin, 1954
Pushin, N.A., Heats of combustion and heats of formation of isomeric organic compounds, Bull. Soc. Chim. Belgrade, 1954, 19, 531-547. [all data]

Schreiner, 1925
Schreiner, E., Thermodynamics of the quinhydrone electrode and the chemical constant of hydrogen, Z. Phys. Chem., 1925, 117, 57-87. [all data]

Kudchadker S.A., 1979
Kudchadker S.A., Ideal gas thermodynamic properties of benzene diols: pyrocatechol, resorcinol, and hydroquinone, Thermochim. Acta, 1979, 30, 319-326. [all data]

Bret-Dibat and Lichanot, 1989
Bret-Dibat, P.; Lichanot, A., Thermodynamic properties of positional isomers of disubstituted benzene in condensed phase, Thermochim. Acta, 1989, 147(2), 261-271. [all data]

Ueberreiter and Orthmann, 1950
Ueberreiter, K.; Orthmann, H.-J., Specifische Wärme, spezifisches Volumen, Temperatur- und Wärme-leittähigkeit einiger disubstituierter Benzole und polycyclischer Systeme, Z. Natursforsch. 5a, 1950, 101-108. [all data]

Satoh and Sogabe, 1941
Satoh, S.; Sogabe, T., The heat capacities of some organic compounds containing nitrogen and the atomic heat of nitrogen. (3), Sci., Pap. Inst. Phys. Chem. Res. (Tokyo), 1941, 38, 238-245. [all data]

Andrews, Lynn, et al., 1926
Andrews, D.H.; Lynn, G.; Johnston, J., The heat capacities and heat of crystallization of some isomeric aromatic compounds, J. Am. Chem. Soc., 1926, 48, 1274-1287. [all data]

Andrews, 1926
Andrews, D.H., The specific heats of some isomers of the type ortho, meta and para C6H4XY from 110 to 340K, J. Am. Chem. Soc., 1926, 48, 1287-1298. [all data]

Lange, 1924
Lange, F., Untersuchungen über die spezifische Wärme bei tiefen Temperaturen, Z. Phys. Chem., 1924, 110, 343-362. [all data]

Fujio, McIver, et al., 1981
Fujio, M.; McIver, R.T., Jr.; Taft, R.W., Effects on the acidities of phenols from specific substituent-solvent interactions. Inherent substituent parameters from gas phase acidities, J. Am. Chem. Soc., 1981, 103, 4017. [all data]


Notes

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