Selected ATcT [1, 2] enthalpy of formation based on version 1.202 of the Thermochemical Network [3]This version of ATcT results[3] was generated by additional expansion of version 1.176 in order to include species related to the thermochemistry of glycine[4].
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Hydrogen chloride |
Formula: HCl (g) |
CAS RN: 7647-01-0 |
ATcT ID: 7647-01-0*0 |
SMILES: Cl |
InChI: InChI=1S/ClH/h1H |
InChIKey: VEXZGXHMUGYJMC-UHFFFAOYSA-N |
Hills Formula: Cl1H1 |
2D Image: |
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Aliases: HCl; Hydrogen chloride; Hydrogen monochloride; Hydrochloric acid; Chlorhydric acid; Chlorohydric acid; Chlorohydrogen; Chloric acid; Chlorine hydride; Chlorine monohydride |
Relative Molecular Mass: 36.46064 ± 0.00090 |
ΔfH°(0 K) | ΔfH°(298.15 K) | Uncertainty | Units |
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-91.988 | -92.172 | ± 0.0062 | kJ/mol |
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3D Image of HCl (g) |
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Top contributors to the provenance of ΔfH° of HCl (g)The 5 contributors listed below account for 90.8% of the provenance of ΔfH° of HCl (g).
Please note: The list is limited to 20 most important contributors or, if less, a number sufficient to account for 90% of the provenance. The Reference acts as a further link to the relevant references and notes for the measurement. The Measured Quantity is normaly given in the original units; in cases where we have reinterpreted the original measurement, the listed value may differ from that given by the authors. The quoted uncertainty is the a priori uncertainty used as input when constructing the initial Thermochemical Network, and corresponds either to the value proposed by the original authors or to our estimate; if an additional multiplier is given in parentheses immediately after the prior uncertainty, it corresponds to the factor by which the prior uncertainty needed to be multiplied during the ATcT analysis in order to make that particular measurement consistent with the prevailing knowledge contained in the Thermochemical Network.
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Top 10 species with enthalpies of formation correlated to the ΔfH° of HCl (g) |
Please note: The correlation coefficients are obtained by renormalizing the off-diagonal elements of the covariance matrix by the corresponding variances. The correlation coefficient is a number from -1 to 1, with 1 representing perfectly correlated species, -1 representing perfectly anti-correlated species, and 0 representing perfectly uncorrelated species.
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Correlation Coefficent (%) | Species Name | Formula | Image | ΔfH°(0 K) | ΔfH°(298.15 K) | Uncertainty | Units | Relative Molecular Mass | ATcT ID | 36.1 | Chloride | Cl- (g) | | -228.953 | -227.346 | ± 0.0021 | kJ/mol | 35.45325 ± 0.00090 | 16887-00-6*0 | 27.3 | Chloroniumyl ion | [HCl]+ (g) | | 1137.798 | 1137.732 | ± 0.0051 | kJ/mol | 36.46009 ± 0.00090 | 12258-94-5*0 | 23.5 | Hydrogen chloride | HCl (aq) | | | -166.990 | ± 0.023 | kJ/mol | 36.46064 ± 0.00090 | 7647-01-0*800 | 23.5 | Chloride | Cl- (aq) | | | -166.990 | ± 0.023 | kJ/mol | 35.45325 ± 0.00090 | 16887-00-6*800 | 23.2 | Hydrogen chloride | HCl (aq, 100 H2O) | | | -165.756 | ± 0.023 | kJ/mol | 36.46064 ± 0.00090 | 7647-01-0*828 | 23.2 | Hydrogen chloride | HCl (aq, 2439 H2O) | | | -166.712 | ± 0.023 | kJ/mol | 36.46064 ± 0.00090 | 7647-01-0*951 | 22.9 | Hydrogen chloride | HCl (aq, 600 H2O) | | | -166.450 | ± 0.023 | kJ/mol | 36.46064 ± 0.00090 | 7647-01-0*834 | 22.9 | Hydrogen chloride | HCl (aq, 75 H2O) | | | -165.555 | ± 0.023 | kJ/mol | 36.46064 ± 0.00090 | 7647-01-0*825 | 22.9 | Hydrogen chloride | HCl (aq, 1500 H2O) | | | -166.635 | ± 0.023 | kJ/mol | 36.46064 ± 0.00090 | 7647-01-0*840 | 22.9 | Hydrogen chloride | HCl (aq, 1000 H2O) | | | -166.563 | ± 0.023 | kJ/mol | 36.46064 ± 0.00090 | 7647-01-0*839 |
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Most Influential reactions involving HCl (g)Please note: The list, which is based on a hat (projection) matrix analysis, is limited to no more than 20 largest influences.
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Influence Coefficient | TN ID | Reaction | Measured Quantity | Reference | 0.992 | 7277.1 | C6H5C(O)Cl (cr,l) + H2O (cr,l) → C6H5C(O)OH (cr,l) + HCl (g)  | ΔrH°(298.15 K) = -8.136 ± 0.050 kcal/mol | Moselhy 1975, Davies 1972a | 0.962 | 6335.3 | CH3Br (g) + HCl (g) → CH3Cl (g) + HBr (g)  | ΔrG°(449.3 K) = 10.036 ± 0.019 kJ/mol | Bak 1948, 3rd Law | 0.790 | 6238.1 | CH2CCl2 (g) + HCl (g) → CH3CCl3 (g)  | ΔrG°(373.65 K) = 2.33 ± 0.45 kJ/mol | Hu 1972, 3rd Law, est unc | 0.559 | 788.1 | HCl (g) → H+ (g) + Cl- (g)  | ΔrH°(0 K) = 116289.0 ± 0.6 cm-1 | Martin 1998, note HCl | 0.437 | 6148.1 | CH2CH2 (g) + HCl (g) → CH3CH2Cl (g)  | ΔrG°(471 K) = -10.007 ± 0.350 kJ/mol | Lane 1953, 3rd Law | 0.385 | 6223.1 | CH3CHCl2 (cr,l) → CH2CHCl (g) + HCl (g)  | ΔrH°(308 K) = 93.24 ± 0.7 kJ/mol | Levanova 1976, Manion 2002, 2nd Law | 0.340 | 6197.1 | CHCl2CCl3 (cr,l) → CCl2CCl2 (l) + HCl (g)  | ΔrH°(298.15 K) = 11.3 ± 1.0 kcal/mol | Kirkbride 1956, est unc | 0.323 | 783.1 | HCl (g) → [HCl]+ (g)  | ΔrH°(0 K) = 102801.5 ± 1 cm-1 | Drescher 1993, note HCl | 0.317 | 6220.2 | CH3CHCl2 (g) → CH2CHCl (g) + HCl (g)  | ΔrG°(420.5 K) = 0.8 ± 0.7 kJ/mol | Levanova 1976, Manion 2002, 3rd Law | 0.265 | 801.1 | HCl (g) → HCl (aq)  | ΔrH°(298.15 K) = -17.884 ± 0.010 kcal/mol | Gunn 1963, Gunn 1964, as quoted by CODATA Key Vals, Vanderzee 1963, NBS Tables 1989 | 0.258 | 784.7 | [HCl]- (g) → HCl (g)  | ΔrH°(0 K) = -0.678 ± 0.050 eV | Ruscic W1RO | 0.248 | 788.2 | HCl (g) → H+ (g) + Cl- (g)  | ΔrH°(0 K) = 116287.7 ± 0.9 cm-1 | Hu 2003, note HCl | 0.248 | 1061.4 | [ClOH2]+ (g) + HCl (g) → HOCl (g) + [HClH]+ (g)  | ΔrH°(0 K) = 18.82 ± 0.8 kcal/mol | Ruscic W1RO | 0.207 | 1258.10 | HOBr (g) + HCl (g) → HOCl (g) + HBr (g)  | ΔrH°(0 K) = 9.94 ± 0.25 kcal/mol | Trogolo 2015, est unc | 0.205 | 6245.1 | CHCl2CHCl2 (cr,l) → CHClCCl2 (l) + HCl (g)  | ΔrH°(298.15 K) = 14.4 ± 1.0 kcal/mol | Kirkbride 1956, est unc | 0.189 | 803.1 | HCl (g) → HCl (aq, 2439 H2O)  | ΔrH°(298.15 K) = -17.810 ± 0.012 kcal/mol | Vanderzee 1963 | 0.185 | 801.5 | HCl (g) → HCl (aq)  | ΔrG°(298.15 K) = -36.015 ± 0.050 kJ/mol | Bates 1919, as quoted by CODATA Key Vals | 0.185 | 801.4 | HCl (g) → HCl (aq)  | ΔrG°(298.15 K) = -36.009 ± 0.050 kJ/mol | Aston 1955, as quoted by CODATA Key Vals | 0.173 | 784.4 | [HCl]- (g) → HCl (g)  | ΔrH°(0 K) = -0.722 ± 0.061 eV | Ruscic G4 | 0.158 | 1061.2 | [ClOH2]+ (g) + HCl (g) → HOCl (g) + [HClH]+ (g)  | ΔrH°(0 K) = 18.72 ± 1.0 kcal/mol | Ruscic G4 |
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References
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1
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B. Ruscic, R. E. Pinzon, M. L. Morton, G. von Laszewski, S. Bittner, S. G. Nijsure, K. A. Amin, M. Minkoff, and A. F. Wagner,
Introduction to Active Thermochemical Tables: Several "Key" Enthalpies of Formation Revisited.
J. Phys. Chem. A 108, 9979-9997 (2004)
[DOI: 10.1021/jp047912y]
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2
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B. Ruscic, R. E. Pinzon, G. von Laszewski, D. Kodeboyina, A. Burcat, D. Leahy, D. Montoya, and A. F. Wagner,
Active Thermochemical Tables: Thermochemistry for the 21st Century.
J. Phys. Conf. Ser. 16, 561-570 (2005)
[DOI: 10.1088/1742-6596/16/1/078]
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3
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B. Ruscic and D. H. Bross, Active Thermochemical Tables (ATcT) values based on ver. 1.202 of the Thermochemical Network (2024); available at ATcT.anl.gov |
4
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B. Ruscic and D. H. Bross
Accurate and Reliable Thermochemistry by Data Analysis of Complex Thermochemical Networks using Active Thermochemical Tables: The Case of Glycine Thermochemistry
Faraday Discuss. (in press) (2024)
[DOI: 10.1039/D4FD00110A]
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5
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B. Ruscic,
Uncertainty Quantification in Thermochemistry, Benchmarking Electronic Structure Computations, and Active Thermochemical Tables.
Int. J. Quantum Chem. 114, 1097-1101 (2014)
[DOI: 10.1002/qua.24605]
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6
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B. Ruscic and D. H. Bross,
Thermochemistry
Computer Aided Chem. Eng. 45, 3-114 (2019)
[DOI: 10.1016/B978-0-444-64087-1.00001-2]
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Formula
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The aggregate state is given in parentheses following the formula, such as: g - gas-phase, cr - crystal, l - liquid, etc.
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Uncertainties
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The listed uncertainties correspond to estimated 95% confidence limits, as customary in thermochemistry (see, for example, Ruscic [5] and Ruscic and Bross[6]).
Note that an uncertainty of ± 0.000 kJ/mol indicates that the estimated uncertainty is < ± 0.0005 kJ/mol.
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Website Functionality Credits
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The reorganization of the website was developed and implemented by David H. Bross (ANL).
The find function is based on the complete Species Dictionary entries for the appropriate version of the ATcT TN.
The molecule images are rendered by Indigo-depict.
The XYZ renderings are based on Jmol: an open-source Java viewer for chemical structures in 3D. http://www.jmol.org/.
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Acknowledgement
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This work was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences and Biosciences under Contract No. DE-AC02-06CH11357.
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