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

disodium sulphide


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
Deltafliquid-77.424kcal/molReviewChase, 1998Data last reviewed in March, 1978
Quantity Value Units Method Reference Comment
liquid,1 bar30.511cal/mol*KReviewChase, 1998Data last reviewed in March, 1978
Quantity Value Units Method Reference Comment
Deltafsolid-87.500kcal/molReviewChase, 1998Data last reviewed in March, 1978
Quantity Value Units Method Reference Comment
solid23.00cal/mol*KReviewChase, 1998Data last reviewed in March, 1978

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

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

View table.

Temperature (K) 1445. - 3000.
A 22.00000
B -0.000011
C 0.000004
D -5.532529×10-7
E -0.000003
F -84.68069
G 55.64675
H -77.42352
ReferenceChase, 1998
Comment Data last reviewed in March, 1978

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

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

View table.

Temperature (K) 298. - 1000.1000. - 1276.1276. - 1445.
A 18.7351313867.88-129545.9
B 3.333700-25021.27188602.1
C 0.65805016739.29-103227.1
D -0.561183-3913.67120134.89
E 0.001984-1650.06924717.02
F -93.23208-7681.40589211.04
G 44.6658717179.30-131343.7
H -87.50000-87.50000-87.50000
ReferenceChase, 1998Chase, 1998Chase, 1998
Comment Data last reviewed in March, 1978 Data last reviewed in March, 1978 Data last reviewed in March, 1978

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