Formula: O₂Si
Molecular Weight: 60.08
CAS Registry Number: 7631-86-9
Chemical Structure:
This structure is also available as a 2d Mol file.
Other Names: Silica; Silicon dioxide; Silicic anhydride; Amorphous silica gel; Silicon oxide; SiO2
Liquid Phase Heat Capacity (Shomate Equation)
References
Notes / Error Report
Other Data Available:
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Liquid Phase Heat Capacity (Shomate Equation)

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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 -D_fH°_f,298
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)
D_fH°_298.15 = enthalpy of formation at 298.15 K (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.

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Temperature (K)	1996. - 4500.
A	85.77200
B	-0.000016
C	0.000004
D	-3.809081×10^-7
E	-0.000017
F	-952.8700
G	113.3440
DH°_f,298 (kJ/mol)	-902.6610
Reference	Chase, 1998
Comment	Data last reviewed in June, 1967

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)
1996.	85.77	172.6	112.0	121.0
2000.	85.77	172.8	112.1	121.3
2100.	85.77	177.0	115.1	129.9
2200.	85.77	181.0	118.0	138.5
2300.	85.77	184.8	120.8	147.1
2400.	85.77	188.4	123.6	155.6
2500.	85.77	191.9	126.2	164.2
2600.	85.77	195.3	128.8	172.8
2700.	85.77	198.5	131.4	181.4
2800.	85.77	201.7	133.8	190.0
2900.	85.77	204.7	136.2	198.5
3000.	85.77	207.6	138.5	207.1
3100.	85.77	210.4	140.8	215.7
3200.	85.77	213.1	143.0	224.3
3300.	85.77	215.7	145.2	232.8
3400.	85.77	218.3	147.3	241.4
3500.	85.77	220.8	149.4	250.0
3600.	85.77	223.2	151.4	258.6
3700.	85.77	225.6	153.4	267.1
3800.	85.77	227.8	155.3	275.7
3900.	85.77	230.1	157.2	284.3
4000.	85.77	232.2	159.0	292.9
4100.	85.77	234.4	160.8	301.5
4200.	85.77	236.4	162.6	310.0
4300.	85.77	238.5	164.4	318.6
4400.	85.77	240.4	166.1	327.2
4500.	85.77	242.4	167.7	335.8

References

Go To: Top, Liquid Phase Heat Capacity (Shomate Equation), Notes / Error Report

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 / Error Report

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Data from NIST Standard Reference Database 69 - February 2000 Release: NIST Chemistry WebBook
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Silicon(iv) oxide

Liquid Phase Heat Capacity (Shomate Equation)

References

Notes / Error Report