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.

Boric acid


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

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

Temperature (K) 298. - 1200.1200. - 6000.
A 5.47754129.54849
B 43.506502.693841
C -30.05540-0.513892
D 8.2905100.034053
E -0.034766-4.982491
F -240.5949-256.9560
G 65.2849991.63760
H -237.1600-237.1600
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in December, 1964 Data last reviewed in December, 1964
Temperature
(K)
Cp
(cal/mol*K)

(cal/mol*K)
-(G° - H°298.15)/T
(cal/mol*K)
H° - H°298.15
(kcal/mol)
298.15.6070.5570.56-0.00
300.15.6670.6670.560.03
400.18.3875.5571.211.74
500.20.6179.9072.523.69
600.22.4683.8374.085.85
700.23.9887.4175.738.17
800.25.2490.6977.4010.63
900.26.2993.7379.0513.21
1000.27.1896.5480.6615.88
1100.27.9799.1782.2218.64
1200.28.71101.683.7421.48
Temperature
(K)
Cp
(cal/mol*K)

(cal/mol*K)
-(G° - H°298.15)/T
(cal/mol*K)
H° - H°298.15
(kcal/mol)
1200.28.64101.683.7421.48
1300.29.31104.085.2124.37
1400.29.86106.186.6327.33
1500.30.33108.288.0030.34
1600.30.74110.289.3233.40
1700.31.09112.190.6136.49
1800.31.39113.991.8539.61
1900.31.67115.693.0542.77
2000.31.91117.294.2245.95
2100.32.12118.895.3549.15
2200.32.32120.396.4552.37
2300.32.50121.797.5255.61
2400.32.66123.198.5558.87
2500.32.81124.499.5662.14
2600.32.94125.7100.565.43
2700.33.06127.0101.568.73
2800.33.17128.2102.472.04
2900.33.28129.3103.375.36
3000.33.37130.5104.278.70
3100.33.46131.5105.182.04
3200.33.54132.6105.985.39
3300.33.61133.6106.888.75
3400.33.67134.6107.692.11
3500.33.74135.6108.395.48
3600.33.79136.6109.198.86
3700.33.84137.5109.9102.2
3800.33.89138.4110.6105.6
3900.33.93139.3111.3109.0
4000.33.97140.1112.0112.4
4100.34.01141.0112.7115.8
4200.34.04141.8113.4119.2
4300.34.07142.6114.1122.6
4400.34.10143.4114.7126.0
4500.34.12144.2115.4129.4
4600.34.15144.9116.0132.8
4700.34.17145.6116.6136.3
4800.34.19146.4117.3139.7
4900.34.21147.1117.9143.1
5000.34.23147.8118.5146.5
5100.34.25148.4119.0149.9
5200.34.26149.1119.6153.4
5300.34.28149.8120.2156.8
5400.34.30150.4120.7160.2
5500.34.32151.0121.3163.7
5600.34.34151.6121.8167.1
5700.34.36152.3122.3170.5
5800.34.38152.8122.9174.0
5900.34.40153.4123.4177.4
6000.34.43154.0123.9180.8

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