Propanoic acid, 2-methyl-

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Condensed 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: Eugene S. Domalski and Elizabeth D. Hearing

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
181.7298.15Biros, Sikora, et al., 1982T = 270 to 370 K. Equation only. Cp = 130.1 - 0.08156 T + 0.0008541 T2 J/mol*K.
173.298.15Konicek and Wadso, 1971 
171.1298.von Reis, 1881T = 291 to 448 K.

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 as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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

Iodide + Propanoic acid, 2-methyl- = (Iodide • Propanoic acid, 2-methyl-)

By formula: I- + C4H8O2 = (I- • C4H8O2)

Quantity Value Units Method Reference Comment
Δr69.9 ± 4.2kJ/molTDAsCaldwell and Kebarle, 1984gas phase; B,M
Quantity Value Units Method Reference Comment
Δr85.8J/mol*KPHPMSCaldwell and Kebarle, 1984gas phase; M
Quantity Value Units Method Reference Comment
Δr44.4 ± 4.2kJ/molTDAsCaldwell and Kebarle, 1984gas phase; B

iPrCO2 anion + Propanoic acid, 2-methyl- = (iPrCO2 anion • Propanoic acid, 2-methyl-)

By formula: C4H7O2- + C4H8O2 = (C4H7O2- • C4H8O2)

Quantity Value Units Method Reference Comment
Δr125. ± 4.2kJ/molN/AMeot-Ner and Sieck, 1986gas phase; B,M
Quantity Value Units Method Reference Comment
Δr140.J/mol*KPHPMSMeot-Ner and Sieck, 1986gas phase; M
Quantity Value Units Method Reference Comment
Δr83.3 ± 6.7kJ/molTDAsMeot-Ner and Sieck, 1986gas phase; B

iPrCO2 anion + Hydrogen cation = Propanoic acid, 2-methyl-

By formula: C4H7O2- + H+ = C4H8O2

Quantity Value Units Method Reference Comment
Δr1448. ± 8.8kJ/molG+TSCaldwell, Renneboog, et al., 1989gas phase; B
Quantity Value Units Method Reference Comment
Δr1418. ± 8.4kJ/molIMRECaldwell, Renneboog, et al., 1989gas phase; B

Hydrogen + 2-Propenoic acid, 2-methyl- = Propanoic acid, 2-methyl-

By formula: H2 + C4H6O2 = C4H8O2

Quantity Value Units Method Reference Comment
Δr-118. ± 1.kJ/molChydSkinner and Snelson, 1959liquid phase; solvent: Acetic acid; ALS

Water + Propanoic acid, 2-methyl-, anhydride = 2Propanoic acid, 2-methyl-

By formula: H2O + C8H14O3 = 2C4H8O2

Quantity Value Units Method Reference Comment
Δr-61.04kJ/molCmConn, Kistiakowsky, et al., 1942liquid phase; Heat of hydrolysis at 303 K; ALS

Methyl isobutyrate + Water = Methyl Alcohol + Propanoic acid, 2-methyl-

By formula: C5H10O2 + H2O = CH4O + C4H8O2

Quantity Value Units Method Reference Comment
Δr-61.6 ± 1.0kJ/molEqkGuthrie and Cullimore, 1980liquid phase; ALS

Henry's Law 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: Rolf Sander

Henry's Law constant (water solution)

kH(T) = H exp(d(ln(kH))/d(1/T) ((1/T) - 1/(298.15 K)))
H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(kH))/d(1/T) = Temperature dependence constant (K)

H (mol/(kg*bar)) d(ln(kH))/d(1/T) (K) Method Reference Comment
1100. MN/A 
5700. MN/AThe value given here was measured at a liquid phase volume mixing ratio of 1 ppmv. missing citation found that the Henry's law constant changes at higher concentrations.

References

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

Biros, Sikora, et al., 1982
Biros, J.; Sikora, A.; Zivny, A.; Pouchly, J., Heat capacity of monomer models of some hydrophilic polymers in aqueous solution from 20° to 60°C, Collect Czech. Chem. Commun., 1982, 47(10), 2692-2701. [all data]

Konicek and Wadso, 1971
Konicek, J.; Wadso, I., Thermochemical properties of some carboxylic acids, amines and N-substituted amides in aqueous solution, Acta Chem. Scand., 1971, 25, 1541-1551. [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]

Caldwell and Kebarle, 1984
Caldwell, G.; Kebarle, P., Binding energies and structural effects in halide anion-ROH and -RCOOH complexes from gas phase equilibria measurements, J. Am. Chem. Soc., 1984, 106, 967. [all data]

Meot-Ner and Sieck, 1986
Meot-Ner, M.; Sieck, L.W., The ionic hydrogen bond and ion solvation. 5. OH...O- bonds. Gas phase solvation and clustering of alkoxide and carboxylate anions, J. Am. Chem. Soc., 1986, 108, 7525. [all data]

Caldwell, Renneboog, et al., 1989
Caldwell, G.; Renneboog, R.; Kebarle, P., Gas Phase Acidities of Aliphatic Carboxylic Acids, Based on Measurements of Proton Transfer Equilibria, Can. J. Chem., 1989, 67, 4, 661, https://doi.org/10.1139/v89-092 . [all data]

Skinner and Snelson, 1959
Skinner, H.A.; Snelson, A., Heats of hydrogenation Part 3., Trans. Faraday Soc., 1959, 55, 405-407. [all data]

Conn, Kistiakowsky, et al., 1942
Conn, J.B.; Kistiakowsky, G.B.; Roberts, R.M.; Smith, E.A., Heats of organic reactions. XIII. Heats of hydrolysis of some acid anhydrides, J. Am. Chem. Soc., 1942, 64, 1747-17. [all data]

Guthrie and Cullimore, 1980
Guthrie, J.P.; Cullimore, P.A., Effect of the acyl substituent on the equilibrium constant for hydration of esters, Can. J. Chem., 1980, 58, 1281-1294. [all data]


Notes

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