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# Dilead

• Formula: Pb2
• Molecular weight: 414.4
• CAS Registry Number: 12596-92-8
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## 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. - 6000. 37.38291 1.650748 -0.007359 0.000626 -0.085272 321.1237 325.6010 332.6284 Chase, 1998 Data last reviewed in September, 1963
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
298.36.91281.3281.3-0.01
300.36.93281.6281.30.07
400.37.51292.3282.83.79
500.37.87300.7285.67.56
600.38.13307.6288.711.36
700.38.36313.5291.815.19
800.38.57318.6294.919.04
900.38.76323.2297.822.90
1000.38.94327.3300.526.79
1100.39.12331.0303.130.69
1200.39.30334.4305.634.61
1300.39.47337.6307.938.55
1400.39.64340.5310.142.50
1500.39.81343.2312.346.48
1600.39.97345.8314.350.47
1700.40.14348.2316.254.47
1800.40.31350.5318.158.49
1900.40.47352.7319.862.53
2000.40.64354.8321.566.59
2100.40.80356.8323.270.66
2200.40.97358.7324.774.75
2300.41.13360.5326.278.85
2400.41.30362.3327.782.98
2500.41.46364.0329.187.11
2600.41.62365.6330.591.27
2700.41.79367.2331.895.44
2800.41.95368.7333.199.62
2900.42.11370.2334.4103.8
3000.42.28371.6335.6108.0
3100.42.44373.0336.8112.3
3200.42.60374.3337.9116.5
3300.42.76375.7339.0120.8
3400.42.93376.9340.1125.1
3500.43.09378.2341.2129.4
3600.43.25379.4342.3133.7
3700.43.42380.6343.3138.0
3800.43.58381.7344.3142.4
3900.43.74382.9345.2146.8
4000.43.90384.0346.2151.1
4100.44.07385.1347.1155.5
4200.44.23386.1348.1160.0
4300.44.39387.2348.9164.4
4400.44.55388.2349.8168.8
4500.44.72389.2350.7173.3
4600.44.88390.2351.5177.8
4700.45.04391.2352.4182.3
4800.45.20392.1353.2186.8
4900.45.36393.0354.0191.3
5000.45.53394.0354.8195.9
5100.45.69394.9355.6200.4
5200.45.85395.7356.3205.0
5300.46.02396.6357.1209.6
5400.46.18397.5357.8214.2
5500.46.34398.3358.5218.8
5600.46.50399.2359.3223.5
5700.46.67400.0360.0228.1
5800.46.83400.8360.7232.8
5900.46.99401.6361.4237.5
6000.47.16402.4362.0242.2

## References

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

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
• The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
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