(H2O)18..SO4 dianion
- Formula: H36O22S-2
- Molecular weight: 420.339
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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
By formula: O4S-2 + 18H2O = H36O22S-2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrG° | 16. ± 8.4 | kJ/mol | IMRE | Blades and Kebarle, 2005 | gas phase; dGaff at 270K; 298 value probably ca. 0.5 kcal/mole weaker |
Ion clustering 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. Searches may be limited to ion clustering reactions. A general reaction search form is also available.
Clustering reactions
By formula: O4S-2 + 18H2O = H36O22S-2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrG° | 16. ± 8.4 | kJ/mol | IMRE | Blades and Kebarle, 2005 | gas phase; dGaff at 270K; 298 value probably ca. 0.5 kcal/mole weaker |
References
Go To: Top, Reaction thermochemistry data, Ion clustering data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Blades and Kebarle, 2005
Blades, A.T.; Kebarle, P.,
Sequential hydration energies of the sulfate ion, from determinations of the equilibrium constants for the gas-phase reactions: SO4(H2O)(n)(2-) = SO4(H2O)(n-1)(2-)+H2O,
J. Phys. Chem. A, 2005, 109, 37, 8293-8298, https://doi.org/10.1021/jp0540353
. [all data]
Notes
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- Symbols used in this document:
ΔrG° Free energy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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