beryllium oxide


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
Δfgas32.600kcal/molReviewChase, 1998Data last reviewed in June, 1975
Quantity Value Units Method Reference Comment
gas,1 bar47.235cal/mol*KReviewChase, 1998Data last reviewed in June, 1975

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) 5000. to 6000.
A 66.04852
B -18.97775
C 2.381599
D -0.105017
E -123.2464
F -112.8399
G 35.83556
H 32.59990
ReferenceChase, 1998
Comment Data last reviewed in June, 1975

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
Δfliquid-129.71kcal/molReviewChase, 1998Data last reviewed in June, 1975
Quantity Value Units Method Reference Comment
liquid,1 bar8.571cal/mol*KReviewChase, 1998Data last reviewed in June, 1975
Quantity Value Units Method Reference Comment
Δfsolid-145.7 ± 0.60kcal/molReviewCox, Wagman, et al., 1984CODATA Review value
Δfsolid-145.40kcal/molReviewChase, 1998α phase; Data last reviewed in June, 1975
Quantity Value Units Method Reference Comment
solid,1 bar3.291 ± 0.01cal/mol*KReviewCox, Wagman, et al., 1984CODATA Review value

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) 2780. to 5000.
A 19.00000
B 1.686860×10-8
C -3.866521×10-9
D 3.049080×10-10
E 2.377920×10-8
F -147.4560
G 15.86600
H -129.7100
ReferenceChase, 1998
Comment Data last reviewed in June, 1975

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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Temperature (K) 298. to 800.800. to 2780.298. to 1500.1500. to 2780.
A 0.80281411.248105.90100011.55660
B 31.451291.33804012.562901.049961
C -33.57880-0.118444-8.688430-0.021545
D 13.434400.0130322.2676700.001870
E -0.128267-0.704439-0.251887-0.829136
F -147.1980-150.9750-146.8940-149.6920
G -4.46435013.089106.30015113.94610
H -145.4000-145.4000-143.8000-143.8000
ReferenceChase, 1998Chase, 1998Chase, 1998Chase, 1998
Comment α phase; Data last reviewed in June, 1975 α phase; Data last reviewed in June, 1975 β phase; Data last reviewed in June, 1975 β phase; Data last reviewed in June, 1975

Gas phase ion energetics 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: Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Ionization energy determinations

IE (eV) Method Reference
10.1 ± 0.4EITheard and Hildenbrand, 1964
10.4EIChupka, Berkowitz, et al., 1959

IR Spectrum

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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: Coblentz Society, Inc.

Spectrum

A digitized version of this spectrum is not currently available.

Additional Data

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Owner COBLENTZ SOCIETY
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Source reference COBLENTZ NO. 1430
Date Not specified, most likely prior to 1970
Instrument Not specified, most likely a prism, grating, or hybrid spectrometer.
Data processing (NO SPECTRUM, ONLY SCANNED IMAGE IS AVAILABLE)

This IR spectrum is from the Coblentz Society's evaluated infrared reference spectra collection.


References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Gas phase ion energetics data, IR Spectrum, 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]

Cox, Wagman, et al., 1984
Cox, J.D.; Wagman, D.D.; Medvedev, V.A., CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1. [all data]

Theard and Hildenbrand, 1964
Theard, L.P.; Hildenbrand, D.L., Heat of formation of Be2O(g) by mass spectrometry, J. Chem. Phys., 1964, 41, 3416. [all data]

Chupka, Berkowitz, et al., 1959
Chupka, W.A.; Berkowitz, J.; Giese, C.F., Vaporization of beryllium oxide and its reaction with tungsten, J. Chem. Phys., 1959, 30, 827. [all data]


Notes

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