mercury difluoride

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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-70.184kcal/molReviewChase, 1998Data last reviewed in December, 1961
Quantity Value Units Method Reference Comment
gas,1 bar64.935cal/mol*KReviewChase, 1998Data last reviewed in December, 1961

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) 2000. to 6000.
A 14.58890
B 0.267460
C -0.072254
D 0.006154
E -0.161247
F -75.08659
G 81.60681
H -70.18511
ReferenceChase, 1998
Comment Data last reviewed in December, 1961

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-96.773kcal/molReviewChase, 1998Data last reviewed in December, 1961
Quantity Value Units Method Reference Comment
liquid,1 bar32.087cal/mol*KReviewChase, 1998Data last reviewed in December, 1961
Quantity Value Units Method Reference Comment
Δfsolid-101.00kcal/molReviewChase, 1998Data last reviewed in December, 1961
Quantity Value Units Method Reference Comment
solid27.799cal/mol*KReviewChase, 1998Data last reviewed in December, 1961

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

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Temperature (K) 918. to 2000.
A 24.40010
B 4.498750×10-8
C -2.810761×10-8
D 5.933540×10-9
E 2.741650×10-9
F -105.8490
G 57.42161
H -96.77280
ReferenceChase, 1998
Comment Data last reviewed in December, 1961

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

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View table.

Temperature (K) 298. to 918.
A 16.40010
B 4.999931
C 0.000129
D -0.000041
E 0.000012
F -106.1120
G 46.15590
H -101.0000
ReferenceChase, 1998
Comment Data last reviewed in December, 1961

Phase change data

Go To: Top, Gas phase thermochemistry data, Condensed 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: William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Δsub32.5 ± 1.kcal/molN/ABrunetti, Piacente, et al., 2008Based on data from 496. to 629. K.

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change 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]

Brunetti, Piacente, et al., 2008
Brunetti, Bruno; Piacente, Vincenzo; Latini, Alessandro; Scardala, Paolo, Vapor Pressures and Sublimation Enthalpies of Mercury(I, II) Fluorides by the Torsion-Effusion Method, J. Chem. Eng. Data, 2008, 53, 11, 2493-2495, https://doi.org/10.1021/je800231f . [all data]


Notes

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