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dimagnesium silicate


Condensed phase thermochemistry data

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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
Deltafliquid-2113.88kJ/molReviewChase, 1998Data last reviewed in December, 1967
Quantity Value Units Method Reference Comment
liquid,1 bar123.01J/mol*KReviewChase, 1998Data last reviewed in December, 1967
Quantity Value Units Method Reference Comment
Deltafsolid-2176.94kJ/molReviewChase, 1998Data last reviewed in December, 1967
Quantity Value Units Method Reference Comment
solid94.96J/mol*KReviewChase, 1998Data last reviewed in December, 1967

Liquid 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.

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Temperature (K) 2171. - 4000.
A 205.0164
B -2.196956×10-7
C 6.630888×10-8
D -6.834356×10-9
E -1.298099×10-7
F -2219.298
G 296.9761
H -2113.878
ReferenceChase, 1998
Comment Data last reviewed in December, 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.

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Temperature (K) 298. - 2171.
A 140.8749
B 47.15201
C -12.22770
D 1.721771
E -3.147210
F -2231.541
G 234.2124
H -2176.935
ReferenceChase, 1998
Comment Data last reviewed in December, 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

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