Boron

Formula: B₂
Molecular weight: 21.622
IUPAC Standard InChI: InChI=1S/B2/c1-2
IUPAC Standard InChIKey: ZOCHARZZJNPSEU-UHFFFAOYSA-N
CAS Registry Number: 14452-61-0
Chemical structure:
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Gas Phase Heat Capacity (Shomate Equation)

C_p° = 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
C_p = 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. - 800.	800. - 6000.
A	-5.565682	43.33243
B	150.5307	-3.618461
C	-170.6670	0.949371
D	66.18586	-0.067489
E	0.506419	-0.352579
F	827.7333	814.3738
G	160.3058	250.2693
H	829.6872	829.6872
Reference	Chase, 1998	Chase, 1998
Comment	Data last reviewed in March, 1979	Data last reviewed in March, 1979

Temperature (K)	C_p (J/mol*K)	S° (J/mol*K)	-(G° - H°_298.15)/T (J/mol*K)	H° - H°_298.15 (kJ/mol)
298.	31.59	202.1	202.1	-0.00
300.	31.65	202.3	202.1	0.06
400.	34.74	211.8	203.3	3.38
500.	37.33	219.8	205.9	6.99
600.	39.02	226.8	208.8	10.81
700.	39.91	232.9	211.8	14.77
800.	40.31	238.3	214.8	18.78

Temperature (K)	C_p (J/mol*K)	S° (J/mol*K)	-(G° - H°_298.15)/T (J/mol*K)	H° - H°_298.15 (kJ/mol)
800.	40.46	238.3	214.8	18.79
900.	40.36	243.0	217.7	22.83
1000.	40.24	247.3	220.4	26.86
1100.	40.12	251.1	223.0	30.88
1200.	40.00	254.6	225.5	34.89
1300.	39.88	257.8	227.9	38.88
1400.	39.76	260.7	230.1	42.86
1500.	39.66	263.5	232.3	46.83
1600.	39.56	266.0	234.3	50.79
1700.	39.47	268.4	236.2	54.74
1800.	39.39	270.7	238.1	58.69
1900.	39.32	272.8	239.9	62.62
2000.	39.26	274.8	241.6	66.55
2100.	39.22	276.7	243.2	70.48
2200.	39.18	278.6	244.8	74.40
2300.	39.14	280.3	246.3	78.31
2400.	39.12	282.0	247.7	82.23
2500.	39.11	283.6	249.1	86.14
2600.	39.10	285.1	250.5	90.05
2700.	39.11	286.6	251.8	93.96
2800.	39.12	288.0	253.1	97.87
2900.	39.14	289.4	254.3	101.8
3000.	39.16	290.7	255.5	105.7
3100.	39.19	292.0	256.6	109.6
3200.	39.23	293.2	257.8	113.5
3300.	39.27	294.4	258.8	117.5
3400.	39.32	295.6	259.9	121.4
3500.	39.38	296.8	260.9	125.3
3600.	39.43	297.9	262.0	129.3
3700.	39.50	298.9	262.9	133.2
3800.	39.56	300.0	263.9	137.2
3900.	39.63	301.0	264.8	141.1
4000.	39.71	302.0	265.8	145.1
4100.	39.78	303.0	266.7	149.1
4200.	39.86	304.0	267.5	153.0
4300.	39.94	304.9	268.4	157.0
4400.	40.02	305.8	269.2	161.0
4500.	40.11	306.7	270.1	165.0
4600.	40.19	307.6	270.9	169.1
4700.	40.27	308.5	271.7	173.1
4800.	40.36	309.3	272.4	177.1
4900.	40.44	310.2	273.2	181.2
5000.	40.52	311.0	273.9	185.2
5100.	40.61	311.8	274.7	189.3
5200.	40.68	312.6	275.4	193.3
5300.	40.76	313.3	276.1	197.4
5400.	40.84	314.1	276.8	201.5
5500.	40.91	314.9	277.5	205.6
5600.	40.98	315.6	278.2	209.7
5700.	41.04	316.3	278.8	213.8
5800.	41.10	317.0	279.5	217.9
5900.	41.16	317.7	280.1	222.0
6000.	41.21	318.4	280.8	226.1

References

Go To: Top, Gas Phase Heat Capacity (Shomate Equation), Notes

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

Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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