Biomedical Engineering Reference
In-Depth Information
TABLE C.6
Heat of Formation of Some Elements and Compounds at
Standard Condition 25
C and 1 Bar Pressure
Heat of Formation
Δ
Absolute Entropy,
S
(J/K mol)
Gibbs Function of
Formation,
H
f
(kJ/mol)
G
f
(kJ/mol)
Substance
Δ
C
(s)
(graphite)
0
5.7
0
C
(s)
(diamond)
1.9
2.38
2.90
CH
4(g)
74.8
186.3
50.7
2
2
C
2
H
2(g)
226.7
200.9
209.2
C
2
H
4(g)
52.3
219.6
68.2
C
2
H
6(g)
2
84.7
229.6
2
32.8
C
3
H
8(g)
2
103.8
269.9
2
23.5
C
6
H
6(l)
49.0
172.8
124.5
CH
3
OH
(l)
238.7
126.8
166.3
2
2
C
2
H
5
OH
(l)
277.7
160.7
178.8
2
2
CH
3
CO
2
H
(l)
484.5
159.8
389.9
2
2
CO
(g)
110.5
197.7
137.2
2
2
CO
2(g)
393.5
213.7
394.4
2
2
He
(g)
0
126.0
0
H
2(g)
0
130.7
0
H
2
O
(l)
285.8
69.9
237.1
2
2
H
2
O
(g)
241.8
188.8
228.6
2
2
H
2
O
2(l)
187.8
109.6
120.4
2
2
N
2(g)
0
191.6
0
NH
3(g)
46.1
192.5
16.5
2
2
NO
(g)
90.3
210.8
86.6
NO
2(g)
33.2
240.1
51.3
N
2
O
(g)
82.1
219.9
104.2
N
2
O
4(g)
9.2
304.3
97.9
HNO
3(l)
2
174.1
155.6
2
80.7
O
(g)
249.2
161.1
231.7
O
2(g)
0
205.1
0
(Continued)
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