Dicarbon


Gas Phase Heat Capacity (Shomate Equation)

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

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. - 700.700. - 6000.
A 123.909230.50408
B -348.00675.445811
C 485.0971-0.853373
D -232.79940.065641
E -1.2402980.814750
F 808.2777831.5784
G 426.6132240.4039
H 837.7372837.7372
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in December, 1969 Data last reviewed in December, 1969
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
298.43.15199.4199.4-0.00
300.43.10199.7199.40.08
400.39.67211.6201.04.22
500.37.12220.1204.08.05
600.36.01226.8207.311.70
700.35.62232.3210.515.28
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
700.35.58232.3210.515.27
800.35.62237.1213.518.83
900.35.77241.3216.422.40
1000.35.98245.0219.125.99
1100.36.22248.5221.629.60
1200.36.49251.6223.933.23
1300.36.77254.6226.236.89
1400.37.05257.3228.340.58
1500.37.34259.9230.344.30
1600.37.62262.3232.348.05
1700.37.90264.6234.151.83
1800.38.18266.8235.855.63
1900.38.45268.8237.559.46
2000.38.71270.8239.163.32
2100.38.97272.7240.767.20
2200.39.22274.5242.271.11
2300.39.47276.3243.675.05
2400.39.71278.0245.079.01
2500.39.94279.6246.482.99
2600.40.17281.1247.787.00
2700.40.39282.7249.091.02
2800.40.61284.1250.295.07
2900.40.82285.6251.499.14
3000.41.02287.0252.5103.2
3100.41.23288.3253.7107.3
3200.41.42289.6254.8111.5
3300.41.62290.9255.9115.6
3400.41.81292.1256.9119.8
3500.41.99293.4257.9124.0
3600.42.17294.5258.9128.2
3700.42.36295.7259.9132.4
3800.42.53296.8260.9136.7
3900.42.71297.9261.8140.9
4000.42.89299.0262.7145.2
4100.43.06300.1263.6149.5
4200.43.23301.1264.5153.8
4300.43.41302.1265.4158.2
4400.43.58303.1266.2162.5
4500.43.75304.1267.0166.9
4600.43.93305.1267.9171.3
4700.44.10306.0268.7175.7
4800.44.28307.0269.4180.1
4900.44.46307.9270.2184.5
5000.44.64308.8271.0189.0
5100.44.82309.7271.7193.4
5200.45.01310.5272.5197.9
5300.45.20311.4273.2202.4
5400.45.39312.2273.9207.0
5500.45.59313.1274.6211.5
5600.45.79313.9275.3216.1
5700.46.00314.7276.0220.7
5800.46.21315.5276.7225.3
5900.46.43316.3277.3229.9
6000.46.66317.1278.0234.6

References

Go To: Top, Gas Phase Heat Capacity (Shomate Equation), 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

Go To: Top, Gas Phase Heat Capacity (Shomate Equation), References