potassium cyanide


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
Δfgas79.50kJ/molReviewChase, 1998Data last reviewed in March, 1966
Quantity Value Units Method Reference Comment
gas,1 bar253.15J/mol*KReviewChase, 1998Data last reviewed in March, 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.

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Temperature (K) 3000. to 6000.
A 61.26590
B 0.509972
C -0.089375
D 0.005515
E -4.709570
F 51.84110
G 315.8810
H 79.49600
ReferenceChase, 1998
Comment Data last reviewed in March, 1966

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-104.15kJ/molReviewChase, 1998Data last reviewed in March, 1966
Quantity Value Units Method Reference Comment
liquid,1 bar134.32J/mol*KReviewChase, 1998Data last reviewed in March, 1966
Quantity Value Units Method Reference Comment
Δfsolid-113.47kJ/molReviewChase, 1998Data last reviewed in March, 1966
Quantity Value Units Method Reference Comment
solid127.77J/mol*KReviewChase, 1998Data last reviewed in March, 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.

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Temperature (K) 895. to 3000.
A 75.31200
B -2.139283×10-10
C 1.235887×10-10
D -2.211846×10-11
E -6.181024×10-12
F -126.6024
G 225.4607
H -104.1481
ReferenceChase, 1998
Comment Data last reviewed in March, 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.

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Temperature (K) 298. to 895.
A 65.80553
B 1.083038
C -0.464441
D 0.103556
E 0.026248
F -133.0483
G 207.2523
H -113.4701
ReferenceChase, 1998
Comment Data last reviewed in March, 1966

References

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


Notes

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