calcium dihydroxide


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-145.98kcal/molReviewChase, 1998Data last reviewed in December, 1975
Quantity Value Units Method Reference Comment
gas,1 bar68.265cal/mol*KReviewChase, 1998Data last reviewed in December, 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) 298. to 6000.
A 19.38410
B 3.589680
C -0.731134
D 0.051122
E -0.249068
F -152.7460
G 89.28301
H -145.9760
ReferenceChase, 1998
Comment Data last reviewed in December, 1975

Reaction 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.

Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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

H2CaO2 + 2Ethane, pentachloro- = CaCl2 + 2Tetrachloroethylene + 2Water

By formula: H2CaO2 + 2C2HCl5 = CaCl2 + 2C2Cl4 + 2H2O

Quantity Value Units Method Reference Comment
Δr-43.40kcal/molCmKirkbride, 1956liquid phase

H2CaO2 + 2Ethane, 1,1,2,2-tetrachloro- = CaCl2 + 2Water + 2Trichloroethylene

By formula: H2CaO2 + 2C2H2Cl4 = CaCl2 + 2H2O + 2C2HCl3

Quantity Value Units Method Reference Comment
Δr-36.kcal/molCmKirkbride, 1956liquid phase

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: Timothy J. Johnson, Tanya L. Myers, Yin-Fong Su, Russell G. Tonkyn, Molly Rose K. Kelly-Gorham, and Tyler O. Danby

Condensed Phase Spectrum

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IR spectrum
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Additional Data

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Owner Public domain
Origin Pacific Northwest National Laboratory Under IARPA Contract
Date March 2017
State solid
Instrument Bruker Tensor 37 FTIR
Aperture 6 mm
External diffuse reflectance accessory A 562-G integrating sphere
Beam splitter Ge on KBr
Diameter of detector port in sphere 2×2 mm, 60° field of view MCT
Sphere diameter 75 mm
Acquisition mode double-sided, forward-backward
Scanner velocity 40 kHz
Co-added scans 2048
Phase resolution 32.00
Phase correction Mertz
Zero filling
Spectral range 7,500 to 600 cm-1 saved; 7500 to 600 cm-1 reported
Resolution 0.96450084
Spectral resolution 4 cm-1
Wavenumber accuracy ± 0.4 cm-1
Apodization function Blackman-Harris 3-term
Low-pass filter Open
Switch gain on 512 points

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]

Kirkbride, 1956
Kirkbride, F.W., The heats of chlorination of some hydrocarbons and their chloro-derivatives, J. Appl. Chem., 1956, 6, 11-21. [all data]


Notes

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