Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

tungsten trioxide


Gas phase thermochemistry data

Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, Vibrational and/or electronic energy levels, 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
Deltafgas-292.88kJ/molReviewChase, 1998Data last reviewed in September, 1966
Quantity Value Units Method Reference Comment
gas,1 bar286.43J/mol*KReviewChase, 1998Data last reviewed in September, 1966

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.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

View table.

Temperature (K) 3000. - 6000.
A 82.72479
B 0.235081
C -0.047714
D 0.003313
E -3.492612
F -327.4557
G 371.5271
H -292.8804
ReferenceChase, 1998
Comment Data last reviewed in September, 1966

Condensed phase thermochemistry data

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Vibrational and/or electronic energy levels, 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
Deltafliquid-788.91kJ/molReviewChase, 1998Data last reviewed in September, 1966
Quantity Value Units Method Reference Comment
liquid,1 bar103.51J/mol*KReviewChase, 1998Data last reviewed in September, 1966
Quantity Value Units Method Reference Comment
Deltafsolid-842.91kJ/molReviewChase, 1998Data last reviewed in September, 1966
Quantity Value Units Method Reference Comment
solid75.91J/mol*KReviewChase, 1998Data last reviewed in September, 1966

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.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

View table.

Temperature (K) 1745. - 3000.
A 131.7960
B 0.000000
C 0.000000
D 0.000000
E 0.000000
F -855.9292
G 211.8573
H -788.9141
ReferenceChase, 1998
Comment Data last reviewed in September, 1966

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.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

View table.

Temperature (K) 298. - 1050.1050. - 1745.
A 30.5396068.31250
B 200.867035.12680
C -206.2480-10.35390
D 76.519302.016841
E -0.0889042.245240
F -859.5700-857.1110
G 60.96830156.3860
H -842.9090-842.9090
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in September, 1966 Data last reviewed in September, 1966

Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Vibrational and/or electronic energy levels, 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: John E. Bartmess

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

(CAS Reg. No. 27151-29-7 bullet 4294967295tungsten trioxide) + tungsten trioxide = CAS Reg. No. 27151-29-7

By formula: (CAS Reg. No. 27151-29-7 bullet 4294967295O3W) + O3W = CAS Reg. No. 27151-29-7

Quantity Value Units Method Reference Comment
Deltar703. ± 54.kJ/molTherJensen and Miller, 1970gas phase; H2WO4 + e- <=> HWO4- + H measured

Vibrational and/or electronic energy levels

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction 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: Marilyn E. Jacox

State:   X


Vib. 
sym. 
 No.   Approximate 
 type of mode 
 cm-1   Med.   Method   References

e 3 WO stretch 924.3 Ne IR Zhou and Andrews, 1999
3 WO stretch 918.3 Ar IR Green and Ervin, 1981
Almond and Downs, 1988
Bare, Souter, et al., 1998
3 WO stretch 916 Kr IR Green and Ervin, 1981

Additional references: Jacox, 1998, page 250; Jacox, 2003, page 226


References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Vibrational and/or electronic energy levels, 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]

Jensen and Miller, 1970
Jensen, D.E.; Miller, W.J., Electron Attachment and Compound Formation in Flames. III. Negative Ion and Compound Formation in Flames Containing Tungsten and Potassium, J. Chem. Phys., 1970, 53, 8, 3287, https://doi.org/10.1063/1.1674479 . [all data]

Zhou and Andrews, 1999
Zhou, M.; Andrews, L., Infrared spectra and density functional calculations of the CrO[sub 2][sup -], MoO[sub 2][sup -], and WO[sub 2][sup -] molecular anions in solid neon, J. Chem. Phys., 1999, 111, 9, 4230, https://doi.org/10.1063/1.479721 . [all data]

Green and Ervin, 1981
Green, D.W.; Ervin, K.M., Infrared spectra of matrix-isolated tungsten oxides, J. MOl. Spectrosc., 1981, 89, 1, 145, https://doi.org/10.1016/0022-2852(81)90166-1 . [all data]

Almond and Downs, 1988
Almond, M.J.; Downs, A.J., J. Chem. Soc., 1988, Dalton Trans. 809. [all data]

Bare, Souter, et al., 1998
Bare, W.D.; Souter, P.F.; Andrews, L., Reactions of Laser-Ablated Molybdenum and Tungsten Atoms with Dioxygen. Resolved Infrared Spectra of Natural Molybdenum and Tungsten Isotopic Oxides in Argon Matrices, J. Phys. Chem. A, 1998, 102, 43, 8279, https://doi.org/10.1021/jp9826266 . [all data]

Jacox, 1998
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement A, J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017 . [all data]

Jacox, 2003
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement B, J. Phys. Chem. Ref. Data, 2003, 32, 1, 1-441, https://doi.org/10.1063/1.1497629 . [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Vibrational and/or electronic energy levels, References