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potassium sulfate


Gas phase 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.

Quantity Value Units Method Reference Comment
Deltafgas-1094.12kJ/molReviewChase, 1998Data last reviewed in June, 1978
Quantity Value Units Method Reference Comment
gas,1 bar366.14J/mol*KReviewChase, 1998Data last reviewed in June, 1978

Gas Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 3000. - 6000.
A 156.9912
B 0.548543
C -0.110834
D 0.007664
E -7.906756
F -1163.244
G 522.4101
H -1094.116
ReferenceChase, 1998
Comment Data last reviewed in June, 1978

Condensed phase 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.

Quantity Value Units Method Reference Comment
Deltafliquid-1393.67kJ/molReviewChase, 1998Data last reviewed in June, 1978
Quantity Value Units Method Reference Comment
liquid,1 bar211.42J/mol*KReviewChase, 1998Data last reviewed in June, 1978
Quantity Value Units Method Reference Comment
Deltafsolid-1437.71kJ/molReviewChase, 1998«alpha» phase; Data last reviewed in June, 1978

Liquid Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 1342. - 3000.
A 201.4604
B 0.000000
C 0.000000
D 0.000000
E 0.000000
F -1471.274
G 415.5017
H -1393.669
ReferenceChase, 1998
Comment Data last reviewed in June, 1978

Solid Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. - 1200.298. - 1342.
A 139.5050114.3424
B -1.19988481.29554
C 136.8080-0.000942
D -47.14322-0.016197
E -1.6639990.000141
F -1485.964-1461.948
G 329.6528306.4152
H -1437.706-1424.246
ReferenceChase, 1998Chase, 1998
Comment «alpha» phase; Data last reviewed in June, 1978 «beta» phase; Data last reviewed in June, 1978

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

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

C2H5KO (cr) + 0.5(Sulfuric Acid bullet 1100Water) (solution) = Ethanol (solution) + 0.5K2O4S (solution)

By formula: C2H5KO (cr) + 0.5(H2O4S bullet 1100H2O) (solution) = C2H6O (solution) + 0.5K2O4S (solution)

Quantity Value Units Method Reference Comment
Deltar-132.3 ± 2.9kJ/molRSCBlanchard, Joly, et al., 1974solvent: 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

Potassium ion (1+) + K2O4S = (Potassium ion (1+) bullet K2O4S)

By formula: K+ + K2O4S = (K+ bullet K2O4S)

Quantity Value Units Method Reference Comment
Deltar160.kJ/molMSKudin, Gusarov, et al., 1973gas phase; Knudsen cell; M

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

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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