Lead iodide

Formula: I₄Pb
Molecular weight: 714.8
CAS Registry Number: 13779-98-1
Information on this page:
Other data available:
- Gas phase thermochemistry data
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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 (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.

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Temperature (K)	298. to 6000.
A	25.82880
B	0.004071
C	-0.001112
D	0.000096
E	-0.037459
F	-61.47560
G	142.4850
H	-53.64900
Reference	Chase, 1998
Comment	Data last reviewed in December, 1973

Temperature (K)	C_p (cal/mol*K)	S° (cal/mol*K)	-(G° - H°_298.15)/T (cal/mol*K)	H° - H°_298.15 (kcal/mol)
298.	25.41	111.4	111.4	-0.00
300.	25.41	111.6	111.4	0.05
400.	25.60	118.9	112.4	2.60
500.	25.68	124.7	114.3	5.16
600.	25.73	129.3	116.5	7.73
700.	25.75	133.3	118.6	10.31
800.	25.77	136.8	120.6	12.88
900.	25.79	139.8	122.6	15.46
1000.	25.79	142.5	124.5	18.04
1100.	25.80	145.0	126.2	20.62
1200.	25.81	147.2	127.9	23.20
1300.	25.81	149.3	129.4	25.78
1400.	25.81	151.2	130.9	28.36
1500.	25.82	153.0	132.3	30.95
1600.	25.82	154.6	133.7	33.53
1700.	25.82	156.2	135.0	36.11
1800.	25.82	157.7	136.2	38.69
1900.	25.82	159.1	137.4	41.27
2000.	25.82	160.4	138.5	43.86
2100.	25.82	161.7	139.5	46.44
2200.	25.83	162.9	140.6	49.02
2300.	25.83	164.0	141.6	51.60
2400.	25.83	165.1	142.5	54.19
2500.	25.83	166.2	143.5	56.77
2600.	25.83	167.2	144.3	59.35
2700.	25.83	168.1	145.2	61.93
2800.	25.83	169.1	146.0	64.52
2900.	25.83	170.0	146.9	67.10
3000.	25.83	170.9	147.6	69.68
3100.	25.83	171.7	148.4	72.27
3200.	25.83	172.5	149.1	74.85
3300.	25.83	173.3	149.9	77.43
3400.	25.83	174.1	150.6	80.01
3500.	25.83	174.9	151.3	82.60
3600.	25.83	175.6	151.9	85.18
3700.	25.83	176.3	152.6	87.76
3800.	25.83	177.0	153.2	90.35
3900.	25.83	177.6	153.8	92.93
4000.	25.83	178.3	154.4	95.51
4100.	25.83	178.9	155.0	98.10
4200.	25.83	179.6	155.6	100.7
4300.	25.83	180.2	156.2	103.3
4400.	25.83	180.8	156.7	105.8
4500.	25.83	181.3	157.2	108.4
4600.	25.83	181.9	157.8	111.0
4700.	25.83	182.5	158.3	113.6
4800.	25.83	183.0	158.8	116.2
4900.	25.83	183.5	159.3	118.8
5000.	25.83	184.1	159.8	121.3
5100.	25.83	184.6	160.3	123.9
5200.	25.83	185.1	160.8	126.5
5300.	25.83	185.6	161.2	129.1
5400.	25.83	186.1	161.7	131.7
5500.	25.83	186.5	162.1	134.3
5600.	25.83	187.0	162.6	136.8
5700.	25.83	187.5	163.0	139.4
5800.	25.83	187.9	163.4	142.0
5900.	25.83	188.3	163.8	144.6
6000.	25.83	188.8	164.2	147.2

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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