calcium dihydroxide

Formula: CaH₂O₂
Molecular weight: 74.093
CAS Registry Number: 1305-62-0
Information on this page:
Other data available:
Data at other public NIST sites:
- Gas Phase Kinetics Database
- X-ray Photoelectron Spectroscopy Database, version 5.0
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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	19.38410
B	3.589680
C	-0.731134
D	0.051122
E	-0.249068
F	-152.7460
G	89.28301
H	-145.9760
Reference	Chase, 1998
Comment	Data last reviewed in December, 1975

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.	17.59	68.26	68.27	-0.00
300.	17.63	68.37	68.27	0.03
400.	19.15	73.68	68.98	1.88
500.	20.01	78.05	70.37	3.84
600.	20.59	81.75	71.97	5.87
700.	21.05	84.96	73.60	7.95
800.	21.42	87.80	75.20	10.08
900.	21.75	90.34	76.74	12.24
1000.	22.04	92.65	78.22	14.43
1100.	22.31	94.76	79.63	16.65
1200.	22.55	96.71	80.97	18.89
1300.	22.78	98.53	82.26	21.16
1400.	22.99	100.2	83.48	23.44
1500.	23.19	101.8	84.65	25.75
1600.	23.37	103.3	85.77	28.08
1700.	23.54	104.7	86.84	30.43
1800.	23.70	106.1	87.88	32.79
1900.	23.85	107.4	88.87	35.17
2000.	23.99	108.6	89.83	37.56
2100.	24.12	109.8	90.75	39.96
2200.	24.24	110.9	91.64	42.38
2300.	24.35	112.0	92.50	44.81
2400.	24.45	113.0	93.33	47.25
2500.	24.55	114.0	94.14	49.70
2600.	24.64	115.0	94.92	52.16
2700.	24.72	115.9	95.68	54.63
2800.	24.79	116.8	96.42	57.10
2900.	24.86	117.7	97.14	59.58
3000.	24.93	118.5	97.84	62.07
3100.	24.98	119.3	98.52	64.57
3200.	25.04	120.1	99.18	67.07
3300.	25.08	120.9	99.83	69.58
3400.	25.12	121.7	100.5	72.09
3500.	25.16	122.4	101.1	74.60
3600.	25.20	123.1	101.7	77.12
3700.	25.23	123.8	102.3	79.64
3800.	25.26	124.5	102.8	82.16
3900.	25.28	125.1	103.4	84.69
4000.	25.30	125.8	104.0	87.22
4100.	25.32	126.4	104.5	89.75
4200.	25.34	127.0	105.0	92.28
4300.	25.35	127.6	105.5	94.82
4400.	25.37	128.2	106.1	97.35
4500.	25.38	128.7	106.5	99.89
4600.	25.39	129.3	107.0	102.4
4700.	25.40	129.9	107.5	105.0
4800.	25.41	130.4	108.0	107.5
4900.	25.42	130.9	108.5	110.1
5000.	25.43	131.4	108.9	112.6
5100.	25.45	131.9	109.4	115.1
5200.	25.46	132.4	109.8	117.7
5300.	25.47	132.9	110.2	120.2
5400.	25.49	133.4	110.6	122.8
5500.	25.51	133.9	111.1	125.3
5600.	25.53	134.3	111.5	127.9
5700.	25.55	134.8	111.9	130.4
5800.	25.58	135.2	112.3	133.0
5900.	25.60	135.6	112.7	135.6
6000.	25.64	136.1	113.1	138.1

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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