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

1,2-Propadiene-1,3-dione


Gas Phase Heat Capacity (Shomate Equation)

Go To: Top, References, Notes

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.

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

Temperature (K) 298. - 1200.1200. - 6000.
A 51.83223106.5761
B 82.079203.008431
C -44.90311-0.585714
D 9.1307850.039383
E -0.494976-12.06958
F -114.0219-153.2486
G 313.4544367.6627
H -93.63792-93.63792
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in June, 1968 Data last reviewed in June, 1968
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
298.66.97276.0276.1-0.01
300.67.16276.5276.10.12
400.74.97296.9278.87.25
500.80.81314.3284.215.05
600.85.51329.5290.523.38
700.89.41343.0297.132.13
800.92.66355.1303.641.24
900.95.38366.2309.950.64
1000.97.64376.4316.160.30
1100.99.53385.8322.070.16
1200.101.1394.5327.780.19
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
1200.101.0394.5327.780.19
1300.102.4402.6333.190.36
1400.103.6410.3338.4100.7
1500.104.5417.5343.4111.1
1600.105.3424.2348.2121.6
1700.106.0430.6352.9132.1
1800.106.6436.7357.4142.8
1900.107.1442.5361.7153.5
2000.107.5448.0365.9164.2
2100.107.9453.3369.9175.0
2200.108.3458.3373.8185.8
2300.108.6463.1377.6196.6
2400.108.9467.7381.3207.5
2500.109.1472.2384.8218.4
2600.109.3476.5388.3229.3
2700.109.5480.6391.6240.3
2800.109.7484.6394.9251.2
2900.109.9488.4398.0262.2
3000.110.1492.2401.1273.2
3100.110.2495.8404.1284.2
3200.110.3499.3407.0295.2
3300.110.4502.7409.9306.3
3400.110.5506.0412.6317.3
3500.110.6509.2415.3328.4
3600.110.7512.3418.0339.5
3700.110.8515.3420.6350.5
3800.110.9518.3423.1361.6
3900.110.9521.2425.6372.7
4000.111.0524.0428.0383.8
4100.111.1526.7430.4394.9
4200.111.1529.4432.7406.0
4300.111.2532.0435.0417.1
4400.111.2534.6437.2428.2
4500.111.2537.1439.4439.4
4600.111.3539.5441.6450.5
4700.111.3541.9443.7461.6
4800.111.4544.2445.8472.8
4900.111.4546.5447.8483.9
5000.111.4548.8449.8495.0
5100.111.4551.0451.7506.2
5200.111.5553.2453.7517.3
5300.111.5555.3455.6528.5
5400.111.5557.4457.4539.6
5500.111.6559.4459.3550.8
5600.111.6561.4461.1561.9
5700.111.6563.4462.9573.1
5800.111.6565.3464.6584.3
5900.111.7567.3466.3595.4
6000.111.7569.1468.0606.6

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