Thermodynamic Properties of Substances and Ions at 25° C

The thermodyamic properties are arranged by group from the periodic table. Click on the group to access the table for that group.

Group VIB

For one mole at 298K and 1 atmosphere pressure
Substance (form)
Enthalpy
DfH (kJ)
Gibbs
DfG (kJ)
Entropy
(J/ K
[Cr(H2O)6]3+(aq)
-1971
...
...
Cr(s)
0
0
23.8
CrO42-(aq)
-863.2
-706.3
38
Cr2O72-(aq)
-1461
-1257
214

Group VIIB

For one mole at 298K and 1 atmosphere pressure
Substance (form)
Enthalpy
DfH (kJ)
Gibbs
DfG (kJ)
Entropy
(J/ K
Mn2+(aq)
-219
-223
-84
Mn(s, a)
0
0
31.8
MnO2(s)
-520.9
-466.1
53.1
MnO4-(aq)
-518.4
-425.1
190

Group VIIIB

For one mole at 298K and 1 atmosphere pressure
Substance (form)
Enthalpy
DfH (kJ)
Gibbs
DfG (kJ)
Entropy
(J/ K
Fe3+(aq)
-47.7
-10.5
-293
Fe2+(aq)
-87.9
-84.94
113
Fe(s)
0
0
27.3
FeO(s)
-272.0
-251.4
60.75
Fe2O3(s)
-825.5
-743.6
87.400
Fe3O4(s)
-1121
-1018
145.3
Co2+(aq)
-67.4
-51.5
-155
Co(s)
0
0
30
Ni2+(aq)
-64.0
-46.4
-159
Ni(s)
0
0
30.1


Most of data from Ebbing, Darrell D., General Chemistry, 3rd Ed., Appendix C, Houghton-Mifflin, 1990.


Thermodynamic potentialsSpecific Heat
 Index

Tables

Reference
Ebbing
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