potassium sulfate
- Formula: K2O4S
- Molecular weight: 174.259
- CAS Registry Number: 7778-80-5
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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 as indicated in comments:
MS - José A. Martinho Simões
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
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Individual Reactions
C2H5KO (cr) + 0.5( • 1100
) (solution) =
(solution) + 0.5K2O4S (solution)
By formula: C2H5KO (cr) + 0.5(H2O4S • 1100H2O) (solution) = C2H6O (solution) + 0.5K2O4S (solution)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -132.3 ± 2.9 | kJ/mol | RSC | Blanchard, Joly, et al., 1974 | solvent: Sulphuric acid aqueous solution; The reaction enthalpy relies on -10.6 kJ/mol for the enthalpy of solution of EtOH(l) and on 35.1±0.1 for the enthalpy of solution of K2SO4(cr) Blanchard, Joly, et al., 1974.; MS |
+ K2O4S = (
• K2O4S)
By formula: K+ + K2O4S = (K+ • K2O4S)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 160. | kJ/mol | MS | Kudin, Gusarov, et al., 1973 | gas phase; Knudsen cell; M |
References
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Blanchard, Joly, et al., 1974
Blanchard, J.M.; Joly, R.D.; Lettoffe, J.M.; Perachon, G.; Thourey, J.,
J. Chim. Phys. Phys.-Chim. Biol., 1974, 71, 472. [all data]
Kudin, Gusarov, et al., 1973
Kudin, L.S.; Gusarov, A.V.; Gorokhov, L.N.,
Mass Spectrometer Study of Equilibria Involving Ions. 1. Potassium Bromide and Sulfate,
High Temp., 1973, 11, 50. [all data]
Notes
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- Symbols used in this document:
ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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