Selected ATcT [1, 2] enthalpy of formation based on version 1.122p of the Thermochemical Network [3]

This version of ATcT results was generated from an expansion of version 1.122o [4] to include an updated enthalpy of formation for Hydrazine. [5].

Species Name Formula Image    ΔfH°(0 K)    ΔfH°(298.15 K) Uncertainty Units Relative
Molecular
Mass		 ATcT ID
Hydrogen fluorideHF (aq, 18.5 H2O)F-321.03± 0.16kJ/mol20.006343 ±
0.000070		7664-39-3*887

Top contributors to the provenance of ΔfH° of HF (aq, 18.5 H2O)

The 14 contributors listed below account for 90.7% of the provenance of ΔfH° of HF (aq, 18.5 H2O).

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.

Contribution
(%)		TN
ID		 Reaction Measured Quantity Reference
19.14125.1 CF4 (g) + 2 H2O (cr,l) → CO2 (g) + 4 HF (aq, 20 H2O) ΔrH°(298.15 K) = -41.38 ± 0.32 kcal/molCox 1965, as quoted by Cox 1970, Domalski 1967
17.7450.1 1/2 H2 (g) + 1/2 F2 (g) → HF (aq, 50 H2O) ΔrH°(298.15 K) = -76.68 ± 0.09 kcal/molKing 1968
12.7453.3 HF (g) → HF (aq) ΔrH°(298.15 K) = -14.81 ± 0.10 kcal/molVanderzee 1971, Westrum 1949, Davis 1961, Ruterjans 1969
12.7452.1 HF (g) + [OH]- (aq) → F- (aq) + H2O (cr,l) ΔrH°(298.15 K) = -28.065 ± 0.10 kcal/molVanderzee 1971
7.95366.1 CH2F2 (g) + O2 (g) → CO2 (g) + 2 HF (aq, 23 H2O) ΔrH°(298.15 K) = -139.83 ± 0.22 kcal/molNeugebauer 1958, as quoted by Cox 1970
3.1453.2 HF (g) → HF (aq) ΔrH°(298.15 K) = -14.75 ± 0.20 kcal/molHood 1951, Vanderzee 1971, Parker 1965, est unc
3.1453.1 HF (g) → HF (aq) ΔrH°(298.15 K) = -14.82 ± 0.20 kcal/molKhaidukov 1936, Vanderzee 1971, Parker 1965, est unc
3.1451.1 HF (g) → HF (aq, 400 H2O) ΔrH°(298.15 K) = -11.56 ± 0.20 kcal/molWartenberg 1926, Vanderzee 1971, Parker 1965
3.1452.2 HF (g) + [OH]- (aq) → F- (aq) + H2O (cr,l) ΔrH°(298.15 K) = -27.93 ± 0.20 kcal/molVanderzee 1971
1.94715.1 CF2CF2 (s) + O2 (g) + 2 H2O (cr,l) → 2 CO2 (g) + 4 HF (aq, 10 H2O) ΔrH°(298.15 K) = -160.34 ± 0.9 kcal/molScott 1955, Good 1956
1.94124.1 CF4 (g) + 2 H2O (cr,l) → CO2 (g) + 4 HF (aq, 10 H2O) ΔrH°(298.15 K) = -41.55 ± 1.00 kcal/molScott 1955, Good 1956
1.74456.1 2 CHF3 (g) + O2 (g) + 2 H2O (cr,l) → 2 CO2 (g) + 6 HF (aq, 22 H2O) ΔrH°(298.15 K) = -180.66 ± 1.30 (×1.164) kcal/molNeugebauer 1958, as quoted by Cox 1970
1.1778.1 FCl(F)(F)(F)F (g) + 3 H2 (g) → HCl (aq, 100 H2O) + 5 HF (aq, 30 H2O) ΔrH°(298.15 K) = -365.93 ± 1.58 kcal/molArmstrong 1969, Oberholtzer 1971, King 1970
0.8407.11 F2 (g) → 2 F (g) ΔrH°(0 K) = 36.91 ± 0.05 kcal/molFeller 2014

Top 10 species with enthalpies of formation correlated to the ΔfH° of HF (aq, 18.5 H2O)

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.

Correlation
Coefficent
(%)		Species Name Formula Image    ΔfH°(0 K)    ΔfH°(298.15 K) Uncertainty Units Relative
Molecular
Mass		 ATcT ID
99.9 Hydrogen fluorideHF (aq, 20 H2O)F-321.04± 0.16kJ/mol20.006343 ±
0.000070		7664-39-3*818
99.9 Hydrogen fluorideHF (aq, 18 H2O)F-321.03± 0.16kJ/mol20.006343 ±
0.000070		7664-39-3*901
99.9 Hydrogen fluorideHF (aq, 22.2 H2O)F-321.06± 0.16kJ/mol20.006343 ±
0.000070		7664-39-3*888
99.9 Hydrogen fluorideHF (aq, 22 H2O)F-321.06± 0.16kJ/mol20.006343 ±
0.000070		7664-39-3*902
99.9 Hydrogen fluorideHF (aq, 23 H2O)F-321.06± 0.16kJ/mol20.006343 ±
0.000070		7664-39-3*903
99.7 FluorideF- (aq)[F-]-334.50± 0.16kJ/mol18.99895178 ±
0.00000050		16984-48-8*800
99.7 Hydrogen fluorideHF (aq)F-334.50± 0.16kJ/mol20.006343 ±
0.000070		7664-39-3*800
99.6 Hydrogen fluorideHF (aq, 40 H2O)F-321.13± 0.16kJ/mol20.006343 ±
0.000070		7664-39-3*821
99.6 Hydrogen fluorideHF (aq, 50 H2O)F-321.16± 0.16kJ/mol20.006343 ±
0.000070		7664-39-3*822
99.6 Hydrogen fluorideHF (aq, 45 H2O)F-321.15± 0.16kJ/mol20.006343 ±
0.000070		7664-39-3*906

Most Influential reactions involving HF (aq, 18.5 H2O)

Please note: The list, which is based on a hat (projection) matrix analysis, is limited to no more than 20 largest influences.

Influence
Coefficient		 TN
ID		 Reaction Measured Quantity Reference
0.531468.2 HF (aq, 18 H2O) → HF (aq, 18.5 H2O) ΔrH°(298.15 K) = -0.0011 ± 0.001 kcal/molnote HFc, Johnson 1973
0.527469.2 HF (aq, 18.5 H2O) → HF (aq, 20 H2O) ΔrH°(298.15 K) = -0.0030 ± 0.001 kcal/molnote HFc, Johnson 1973
0.200463.1 HF (aq, 18.5 H2O) → HF (aq) ΔrH°(298.15 K) = -3.216 ± 0.006 kcal/molParker 1965
0.132468.1 HF (aq, 18 H2O) → HF (aq, 18.5 H2O) ΔrH°(298.15 K) = -0.0005 ± 0.002 kcal/molnote HFc, Parker 1965
0.131469.1 HF (aq, 18.5 H2O) → HF (aq, 20 H2O) ΔrH°(298.15 K) = -0.0012 ± 0.002 kcal/molnote HFc, Parker 1965
References
1   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]
2   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]
3   B. Ruscic and D. H. Bross,
Active Thermochemical Tables (ATcT) values based on ver. 1.122p of the Thermochemical Network (2020); available at ATcT.anl.gov
4   P. B. Changala, T. L. Nguyen, J. H. Baraban, G. B. Ellison, J. F. Stanton, D. H. Bross, and B. Ruscic,
Active Thermochemical Tables: The Adiabatic Ionization Energy of Hydrogen Peroxide.
J. Phys. Chem. A 121, 8799-8806 (2017) [DOI: 10.1021/acs.jpca.7b06221] (highlighted on the journal cover)
5   D. Feller, D. H. Bross, and B. Ruscic,
Enthalpy of Formation of N2H4 (Hydrazine) Revisited.
J. Phys. Chem. A 121, 6187-6198 (2017) [DOI: 10.1021/acs.jpca.7b06017]
6   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]
Formula
The aggregate state is given in parentheses following the formula, such as: g - gas-phase, cr - crystal, l - liquid, etc.
Uncertainties
The listed uncertainties correspond to estimated 95% confidence limits, as customary in thermochemistry (see, for example, Ruscic [6]).
Note that an uncertainty of ± 0.000 kJ/mol indicates that the estimated uncertainty is < ± 0.0005 kJ/mol.
Website Functionality Credits
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/.
Acknowledgement
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.