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

NOTICE: Due to scheduled maintenance at our Gaithersburg campus, this site will not be available from 5:00 pm EDT (21:00 UTC) on Friday October 25 until 5:00 pm (21:00 UTC) on Sunday October 27. We apologize for any inconvenience this outage may cause.

magnesium bromide


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) 2000. - 6000.
A 62.01316
B 0.294116
C -0.079647
D 0.006794
E -0.305897
F -322.4500
G 374.2663
H -302.9224
ReferenceChase, 1998
Comment Data last reviewed in June, 1974
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
2000.62.26417.7365.2105.1
2100.62.27420.8367.8111.3
2200.62.28423.7370.3117.5
2300.62.29426.4372.6123.7
2400.62.30429.1374.9130.0
2500.62.31431.6377.2136.2
2600.62.31434.1379.3142.4
2700.62.32436.4381.4148.7
2800.62.32438.7383.4154.9
2900.62.33440.9385.3161.1
3000.62.33443.0387.2167.4
3100.62.33445.0389.0173.6
3200.62.33447.0390.8179.8
3300.62.33448.9392.6186.1
3400.62.33450.8394.2192.3
3500.62.33452.6395.9198.5
3600.62.33454.4397.5204.8
3700.62.33456.1399.0211.0
3800.62.33457.7400.6217.2
3900.62.33459.4402.1223.5
4000.62.33460.9403.5229.7
4100.62.33462.5404.9235.9
4200.62.33464.0406.3242.2
4300.62.33465.4407.7248.4
4400.62.33466.9409.0254.6
4500.62.33468.3410.3260.9
4600.62.33469.6411.6267.1
4700.62.33471.0412.8273.3
4800.62.33472.3414.1279.6
4900.62.33473.6415.3285.8
5000.62.33474.8416.4292.0
5100.62.33476.1417.6298.3
5200.62.33477.3418.7304.5
5300.62.34478.5419.8310.7
5400.62.34479.6420.9317.0
5500.62.34480.8422.0323.2
5600.62.35481.9423.1329.4
5700.62.35483.0424.1335.7
5800.62.36484.1425.1341.9
5900.62.36485.2426.2348.1
6000.62.37486.2427.1354.4

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