Hydrazine

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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.

Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Δfgas22.79kcal/molReviewChase, 1998Data last reviewed in December, 1965
Δfgas36. ± 2.kcal/molIonWillis, Lossing, et al., 1976Appearance potentials; ALS
Δfgas12.05kcal/molCmCole and Gilbert, 1951ALS
Quantity Value Units Method Reference Comment
Δcgas-148.68kcal/molCmCole and Gilbert, 1951ALS
Quantity Value Units Method Reference Comment
gas,1 bar57.041cal/mol*KReviewChase, 1998Data last reviewed in December, 1965

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) 800. to 2000.2000. to 6000.
A 8.40879629.01554
B 22.957121.151262
C -9.680044-0.182364
D 1.5937070.010333
E -0.208947-9.748208
F 18.64042-2.720149
G 59.6140172.97897
H 22.7900122.79001
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in December, 1965 Data last reviewed in December, 1965

References

Go To: Top, Gas phase thermochemistry 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]

Willis, Lossing, et al., 1976
Willis, C.; Lossing, F.P.; Back, R.A., The heat of formation of N2H2 and the proton affinity of N2, Can. J. Chem., 1976, 54, 1-3. [all data]

Cole and Gilbert, 1951
Cole, L.G.; Gilbert, E.C., The heats of combustion of some nitrogen compounds and the apparent energy of the N-N bond, J. Am. Chem. Soc., 1951, 73, 5423-5427. [all data]


Notes

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