Acetic acid, hydroxy-
- Formula: C2H4O3
- Molecular weight: 76.0514
- IUPAC Standard InChI: InChI=1S/C2H4O3/c3-1-2(4)5/h3H,1H2,(H,4,5)
- IUPAC Standard InChIKey: AEMRFAOFKBGASW-UHFFFAOYSA-N
- CAS Registry Number: 79-14-1
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Glycolic acid; α-Hydroxyacetic acid; Glycollic acid; Hydroxyacetic acid; Hydroxyethanoic acid; HOCH2COOH; Kyselina glykolova; Kyselina hydroxyoctova; 2-Hydroxyacetic acid; 2-Hydroxyethanoic acid; NSC 166
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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 |
|---|---|---|---|
| 37.86 | 50. | Dorofeeva O.V., 1997 | p=1 bar. |
| 46.44 | 100. | ||
| 56.01 | 150. | ||
| 65.66 | 200. | ||
| 85. ± 2. | 298.15 | ||
| 85.09 | 300. | ||
| 104.05 | 400. | ||
| 120.61 | 500. | ||
| 133.95 | 600. | ||
| 144.36 | 700. | ||
| 152.48 | 800. | ||
| 158.94 | 900. | ||
| 164.19 | 1000. | ||
| 168.54 | 1100. | ||
| 172.22 | 1200. | ||
| 175.37 | 1300. | ||
| 178.10 | 1400. | ||
| 180.47 | 1500. |
Gas phase ion energetics 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 by: John E. Bartmess
De-protonation reactions
C2H3O3- + =
By formula: C2H3O3- + H+ = C2H4O3
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1390. ± 9.6 | kJ/mol | TDEq | Caldwell, Renneboog, et al., 1989 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 1372. ± 8.4 | kJ/mol | TDEq | Caldwell, Renneboog, et al., 1989 | gas phase |
References
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics 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Unpublished results.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]
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]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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