Lithium fluoride

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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
Δfgas-340.79kJ/molReviewChase, 1998Data last reviewed in December, 1968
Quantity Value Units Method Reference Comment
gas,1 bar200.21J/mol*KReviewChase, 1998Data last reviewed in December, 1968

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. to 6000.
A 35.08832
B 2.506677
C -0.517285
D 0.043750
E -0.427308
F -352.7878
G 239.5436
H -340.7872
ReferenceChase, 1998
Comment Data last reviewed in December, 1968

Condensed phase thermochemistry data

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

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
Δfliquid-598.65kJ/molReviewChase, 1998Data last reviewed in December, 1968
Quantity Value Units Method Reference Comment
liquid,1 bar42.96J/mol*KReviewChase, 1998Data last reviewed in December, 1968
Quantity Value Units Method Reference Comment
Δfsolid-616.93kJ/molReviewChase, 1998Data last reviewed in December, 1968
Quantity Value Units Method Reference Comment
solid35.73J/mol*KReviewChase, 1998Data last reviewed in December, 1968

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) 1121.3 to 3000.
A 64.18298
B 4.195423×10-11
C -2.302271×10-11
D 3.924242×10-12
E 1.150237×10-12
F -617.7885
G 120.6335
H -598.6509
ReferenceChase, 1998
Comment Data last reviewed in December, 1968

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. to 1121.3
A 41.75837
B 18.71110
C 0.693674
D -0.992621
E -0.487055
F -631.8342
G 77.92072
H -616.9308
ReferenceChase, 1998
Comment Data last reviewed in December, 1968

Phase change 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: William E. Acree, Jr., James S. Chickos

Enthalpy of sublimation

ΔsubH (kJ/mol) Temperature (K) Reference Comment
268.2 ± 4.21073. to 1121.Scheffee and Margrave, 1959See also Eisenstadt, Rothberg, et al., 1958.
267.8 ± 4.2957. to 1113.Porter and Schoonmaker, 1958 

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.

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

Scheffee and Margrave, 1959
Scheffee, R.S.; Margrave, J.L., Vapor Pressure Equations for Species over Solid and Liquid LiF, J. Chem. Phys., 1959, 31, 6, 1682, https://doi.org/10.1063/1.1730680 . [all data]

Eisenstadt, Rothberg, et al., 1958
Eisenstadt, M.; Rothberg, G.M.; Kusch, P., Molecular Composition of Alkali Fluoride Vapors, J. Chem. Phys., 1958, 29, 4, 797, https://doi.org/10.1063/1.1744593 . [all data]

Porter and Schoonmaker, 1958
Porter, R.F.; Schoonmaker, R.C., Mass spectrometric study of the vaporization of LiF, NaF, and LiF-NaF mixtures, J. Chem. Phys., 1958, 29, 1070. [all data]


Notes

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