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Dipotassium


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
Deltafgas29.560kcal/molReviewChase, 1998Data last reviewed in December, 1983
Quantity Value Units Method Reference Comment
gas,1 bar59.682cal/mol*KReviewChase, 1998Data last reviewed in December, 1983

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 (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. - 1300.1300. - 6000.
A 5.4155817.412359
B 12.80000-1.382941
C -13.462400.276767
D 3.826100-0.018846
E 0.0835362.970591
F 27.7701032.06570
G 63.4530173.42949
H 29.5609929.56099
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in December, 1983 Data last reviewed in December, 1983

Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, References, Notes

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

Data compiled by: 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

K8+ + Dipotassium = (K8+ bullet Dipotassium)

By formula: K8+ + K2 = (K8+ bullet K2)

Quantity Value Units Method Reference Comment
Deltar20.3kcal/molPDissBrechignac, Cahuzac, et al., 1990gas phase

K9+ + Dipotassium = (K9+ bullet Dipotassium)

By formula: K9+ + K2 = (K9+ bullet K2)

Quantity Value Units Method Reference Comment
Deltar12.7kcal/molPDissBrechignac, Cahuzac, et al., 1990gas phase

K11+ + Dipotassium = (K11+ bullet Dipotassium)

By formula: K11+ + K2 = (K11+ bullet K2)

Quantity Value Units Method Reference Comment
Deltar15.7kcal/molPDissBrechignac, Cahuzac, et al., 1990gas phase

K13+ + Dipotassium = (K13+ bullet Dipotassium)

By formula: K13+ + K2 = (K13+ bullet K2)

Quantity Value Units Method Reference Comment
Deltar16.4kcal/molPDissBrechignac, Cahuzac, et al., 1990gas phase

K3+ + Dipotassium = (K3+ bullet Dipotassium)

By formula: K3+ + K2 = (K3+ bullet K2)

Quantity Value Units Method Reference Comment
Deltar15.9kcal/molPDissBrechignac, Cahuzac, et al., 1990gas phase

K4+ + Dipotassium = (K4+ bullet Dipotassium)

By formula: K4+ + K2 = (K4+ bullet K2)

Quantity Value Units Method Reference Comment
Deltar13.8kcal/molPDissBrechignac, Cahuzac, et al., 1990gas phase

K6+ + Dipotassium = (K6+ bullet Dipotassium)

By formula: K6+ + K2 = (K6+ bullet K2)

Quantity Value Units Method Reference Comment
Deltar19.1kcal/molPDissBrechignac, Cahuzac, et al., 1990gas phase

K5+ + Dipotassium = (K5+ bullet Dipotassium)

By formula: K5+ + K2 = (K5+ bullet K2)

Quantity Value Units Method Reference Comment
Deltar18.2kcal/molPDissBrechignac, Cahuzac, et al., 1990gas phase

K7+ + Dipotassium = (K7+ bullet Dipotassium)

By formula: K7+ + K2 = (K7+ bullet K2)

Quantity Value Units Method Reference Comment
Deltar21.7kcal/molPDissBrechignac, Cahuzac, et al., 1990gas phase

K10+ + Dipotassium = (K10+ bullet Dipotassium)

By formula: K10+ + K2 = (K10+ bullet K2)

Quantity Value Units Method Reference Comment
Deltar14.1kcal/molPDissBrechignac, Cahuzac, et al., 1990gas phase

K12+ + Dipotassium = (K12+ bullet Dipotassium)

By formula: K12+ + K2 = (K12+ bullet K2)

Quantity Value Units Method Reference Comment
Deltar16.4kcal/molPDissBrechignac, Cahuzac, et al., 1990gas phase

References

Go To: Top, Gas 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]

Brechignac, Cahuzac, et al., 1990
Brechignac, C.; Cahuzac, P.; Carlier, F.; De Frutos, M.; Leyniger, J., Cohesive Energies of (K)n+ 5<n<200 from Photoevaporation Experiments, J. Chem. Phys., 1990, 93, 10, 7449, https://doi.org/10.1063/1.459418 . [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, References