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 IIIA

For one mole at 298K and 1 atmosphere pressure
Substance (form)
Enthalpy
DfH (kJ)
Gibbs
DfG (kJ)
Entropy
(J/ K
B*
0
0
5.87
B2O3(s)
-1272
-1193
53.8
Al(s)
0
0
28.3
Al3+(aq)
-524.7
-481.2
-313
Al2O3(s)
-1676
-1582
50.94
* For b-rhombohedral form.

Group IVA

For one mole at 298K and 1 atmosphere pressure
Substance (form)
Enthalpy
DfH (kJ)
Gibbs
DfG (kJ)
Entropy
(J/ K
C(g)
715.0
669.6
158.0
C(graphite>
0
0
5.686
C(diamond)
1.896
2.866
2.439
CO(g)
-110.5
-137.2
197.5
CO2(g)
-393.5
-394.4
213.7
CO2(aq)
-412.9
-386.2
121
CO32-(aq)
-676.26
-528.10
-53.1
HCO3-(aq)
-691.11
-587.06
95.0
H2CO3(aq)
-698.7
-623.42
191
CH4(g)
-74.87
-50.81
186.1
C2H2(g)
227
209
200.85
C2H4(g)
52.47
68.36
219.22
C2H6(g)
-84.667
-32.89
229.5
C2H6(l)
49.0
124.5
172.8
CH3OH(g)
-201.2
-161.9
238
CH3OH(l)
-238.6
-166.2
127
HCHO(g)
-116
-110
219
HCOO-(aq)
-410
-335
91.6
HCOOH(l)
-409
-346
129.0
HCOOH(aq)
-410
-356
164
C2H5OH(l)
-277.63
-174.8
161
CH3CHO(g)
-166
-133.7
266
CH3COOH(l)
-487.0
-392
160
CN-(aq)
151
166
118
HCN(g)
135
125
201.7
HCN(l)
105
121
112.8
HCN(aq)
105
112
129
CS2(g)
117
66.9
237.79
CS2(l)
87.9
63.6
151.0
CH3Cl(g)
-83.7
-60.2
234
CH2Cl2(l)
-117
-63.2
179
CHCl3(l)
-132
-71.5
203
CCl4(g)
-96.0
-53.7
309.7
CCl4(l)
-139
-68.6
214.4
COCl2(g)
-220
-206
283.74
Si(s)
0
0
18.0
SiO2(s)
-910.9
-856.5
41.5
Sn(gray)
3
4.6
44.8
Sn(white)
0
0
51.5
SnCl4(l)
-545.2
-474.0
259
Pb2+(aq)
1.6
-24.3
21
Pb(s)
0
0
64.785
PbO(s)
-218
-198
68.70
PbO2(s)
-276.6
-219
76.6
PbS(s)
-98.3
-96.7
91.3
PbCl2(s)
-359
-314
136
PbSO4(s)
-918.39
-811.24
147


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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