potassium metaborate


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 (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 2000. to 6000.
A 19.44820
B 0.226259
C -0.044237
D 0.002984
E -1.338600
F -170.1760
G 90.05949
H -161.1000
ReferenceChase, 1998
Comment Data last reviewed in June, 1971
Temperature
(K)
Cp
(cal/mol*K)

(cal/mol*K)
-(G° - H°298.15)/T
(cal/mol*K)
H° - H°298.15
(kcal/mol)
2000.19.41104.188.6630.84
2100.19.45105.089.4232.78
2200.19.49105.990.1534.73
2300.19.52106.890.8536.68
2400.19.55107.691.5438.63
2500.19.57108.492.2040.59
2600.19.59109.292.8342.54
2700.19.61109.993.4544.50
2800.19.63110.794.0646.47
2900.19.65111.394.6448.43
3000.19.66112.095.2150.40
3100.19.67112.795.7652.36
3200.19.69113.396.3054.33
3300.19.70113.996.8256.30
3400.19.71114.597.3358.27
3500.19.72115.097.8360.24
3600.19.73115.698.3262.21
3700.19.73116.198.7964.19
3800.19.74116.799.2566.16
3900.19.75117.299.7168.13
4000.19.75117.7100.170.11
4100.19.76118.2100.672.08
4200.19.76118.6101.074.06
4300.19.77119.1101.476.04
4400.19.77119.6101.878.01
4500.19.78120.0102.279.99
4600.19.78120.4102.681.97
4700.19.78120.9103.083.95
4800.19.79121.3103.485.93
4900.19.79121.7103.787.90
5000.19.79122.1104.189.88
5100.19.80122.5104.591.86
5200.19.80122.9104.893.84
5300.19.80123.2105.295.82
5400.19.80123.6105.597.80
5500.19.81124.0105.899.78
5600.19.81124.3106.2101.8
5700.19.81124.7106.5103.7
5800.19.81125.0106.8105.7
5900.19.82125.4107.1107.7
6000.19.82125.7107.4109.7

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