Sulfate
- Formula: O4S-2
- Molecular weight: 96.064
- IUPAC Standard InChI: InChI=1S/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)/p-2
- IUPAC Standard InChIKey: QAOWNCQODCNURD-UHFFFAOYSA-L
- CAS Registry Number: 14808-79-8
- Chemical structure:
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Reaction thermochemistry data
Go To: Top, References, Notes
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
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Individual Reactions
+ 12
= H24O16S-2
By formula: O4S-2 + 12H2O = H24O16S-2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 10.7 ± 2.0 | kcal/mol | TDAs | Blades and Kebarle, 2005 | gas phase; B |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 4.8 ± 2.0 | kcal/mol | TDAs | Blades and Kebarle, 2005 | gas phase; B |
( • 10
) +
= (
• 11
)
By formula: (O4S-2 • 10H2O) + H2O = (O4S-2 • 11H2O)
Bond type: Hydrogen bond (negative ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 5.0 | kcal/mol | ES/HPMS | Blades, Klassen, et al., 1995 | gas phase; M |
( • 9
) +
= (
• 10
)
By formula: (O4S-2 • 9H2O) + H2O = (O4S-2 • 10H2O)
Bond type: Hydrogen bond (negative ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 5.5 | kcal/mol | ES/HPMS | Blades, Klassen, et al., 1995 | gas phase; M |
( • 5
) +
= (
• 6
)
By formula: (O4S-2 • 5H2O) + H2O = (O4S-2 • 6H2O)
Bond type: Hydrogen bond (negative ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 8.5 | kcal/mol | ES/HPMS | Blades, Klassen, et al., 1995 | gas phase; M |
( • 6
) +
= (
• 7
)
By formula: (O4S-2 • 6H2O) + H2O = (O4S-2 • 7H2O)
Bond type: Hydrogen bond (negative ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 7.5 | kcal/mol | ES/HPMS | Blades, Klassen, et al., 1995 | gas phase; M |
( • 7
) +
= (
• 8
)
By formula: (O4S-2 • 7H2O) + H2O = (O4S-2 • 8H2O)
Bond type: Hydrogen bond (negative ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 6.7 | kcal/mol | ES/HPMS | Blades, Klassen, et al., 1995 | gas phase; M |
( • 8
) +
= (
• 9
)
By formula: (O4S-2 • 8H2O) + H2O = (O4S-2 • 9H2O)
Bond type: Hydrogen bond (negative ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 6.0 | kcal/mol | ES/HPMS | Blades, Klassen, et al., 1995 | gas phase; M |
+ 13
= H26O17S-2
By formula: O4S-2 + 13H2O = H26O17S-2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 5.1 ± 2.0 | kcal/mol | IMRE | Blades and Kebarle, 2005 | gas phase; dGaff at 270K; 298 value probably ca. 0.5 kcal/mole weaker; B |
+ 14
= H28O18S-2
By formula: O4S-2 + 14H2O = H28O18S-2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 4.9 ± 2.0 | kcal/mol | IMRE | Blades and Kebarle, 2005 | gas phase; dGaff at 270K; 298 value probably ca. 0.5 kcal/mole weaker; B |
+ 15
= H30O19S-2
By formula: O4S-2 + 15H2O = H30O19S-2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 4.5 ± 2.0 | kcal/mol | IMRE | Blades and Kebarle, 2005 | gas phase; dGaff at 270K; 298 value probably ca. 0.5 kcal/mole weaker; B |
+ 16
= H32O20S-2
By formula: O4S-2 + 16H2O = H32O20S-2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 4.3 ± 2.0 | kcal/mol | IMRE | Blades and Kebarle, 2005 | gas phase; dGaff at 270K; 298 value probably ca. 0.5 kcal/mole weaker; B |
+ 17
= H34O21S-2
By formula: O4S-2 + 17H2O = H34O21S-2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 4.2 ± 2.0 | kcal/mol | IMRE | Blades and Kebarle, 2005 | gas phase; dGaff at 270K; 298 value probably ca. 0.5 kcal/mole weaker; B |
+ 18
= H36O22S-2
By formula: O4S-2 + 18H2O = H36O22S-2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 3.9 ± 2.0 | kcal/mol | IMRE | Blades and Kebarle, 2005 | gas phase; dGaff at 270K; 298 value probably ca. 0.5 kcal/mole weaker; B |
+ 19
= H38O23S-2
By formula: O4S-2 + 19H2O = H38O23S-2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 3.7 ± 2.0 | kcal/mol | IMRE | Blades and Kebarle, 2005 | gas phase; dGaff at 270K; 298 value probably ca. 0.5 kcal/mole weaker; B |
+ 6
= H12O10S-2
By formula: O4S-2 + 6H2O = H12O10S-2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 8.50 ± 0.30 | kcal/mol | TDAs | Blades, Klassen, et al., 1995 | gas phase; B |
References
Go To: Top, Reaction thermochemistry 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]
Blades, Klassen, et al., 1995
Blades, A.T.; Klassen, J.S.; Kebarle, P.,
Free Energies of Hydration in the Gas Phase on the Anions of Some Oxo Acids of C, N, S, P, Cl and I,
J. Am. Chem. Soc., 1995, 117, 42, 10563, https://doi.org/10.1021/ja00147a019
. [all data]
Notes
Go To: Top, Reaction thermochemistry data, References
- Symbols used in this document:
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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