Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

Quartz (SiO2)


Condensed phase thermochemistry data

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.

Quantity Value Units Method Reference Comment
Deltafsolid-910.86kJ/molReviewChase, 1998quartz phase; Data last reviewed in June, 1967

Solid Phase Heat Capacity (Shomate Equation)

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

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

View table.

Temperature (K) 298. - 847.847. - 1996.
A -6.07659158.75340
B 251.675510.27925
C -324.7964-0.131384
D 168.56040.025210
E 0.0025480.025601
F -917.6893-929.3292
G -27.96962105.8092
H -910.8568-910.8568
ReferenceChase, 1998Chase, 1998
Comment quartz phase; Data last reviewed in June, 1967 quartz phase; Data last reviewed in June, 1967

References

Go To: Top, Condensed phase thermochemistry data, 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, Condensed phase thermochemistry data, References