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3.10.3 Standard molar heat capacities of some
gases
Standard molar heat capacities
C°p,m at constant pressure are given for some gaseous
substances B at several temperatures T. The values were taken from I.
Barin (1989) Thermochemical Data of Pure Substances, Parts I and II,
VCH, Weinheim, F.R.G. R = 8.314 51
J·K−1·mol−1.
|
C°pm(T)/R
|
|
B
M/(g·mol−1) |
Ar
39.948 |
Br2
159.808 |
CCl4
153.822 |
CH4
16.043 |
C2H2
26.038 |
C2H4
28.054 |
C2H6
30.070 |
C3H8
44.097 |
|
T/K |
|
|
|
|
|
|
|
|
|
298.15
. . . .
. . |
2.500 |
4.335 |
10.031 |
4.287 |
5.299 |
5.159 |
6.319 |
8.875 |
|
400
. . . .
. . . |
2.500 |
4.418 |
11.027 |
4.870 |
6.084 |
6.379 |
7.946 |
11.413 |
|
600
. . . .
. . . |
2.500 |
4.483 |
11.989 |
6.282 |
7.007 |
8.499 |
10.719 |
15.549 |
|
800
. . . .
. . . |
2.500 |
4.514 |
12.398 |
7.569 |
7.666 |
10.084 |
12.975 |
18.716 |
|
1000
. . . .
. . . |
2.500 |
4.534 |
12.604 |
8.633 |
8.205 |
11.293 |
14.766 |
21.099 |
|
1200
. . . .
. . . |
2.500 |
4.549 |
12.721 |
9.482 |
8.660 |
12.223 |
|
22.885 |
|
|
|
|
|
|
|
|
|
|
|
C°pm
(T)/R |
|
B
M/(g·mol−1) |
CH3(CH2)2CH3
58.123 |
C6H6
78.114 |
CHCl3
48.472 |
CH3OH
32.042 |
C2H5OH
46.069 |
CH3COCH3
58.080 |
(C2H5)2O
74.123 |
CO
28.010 |
|
T/K |
|
|
|
|
|
|
|
|
|
298.15 .
. . . |
11.819 |
9.926 |
7.915 |
5.269 |
7.863 |
8.822 |
13.532 |
3.505 |
|
400 .
. . . . |
14.915 |
13.476 |
8.959 |
6.230 |
9.772 |
11.033 |
16.611 |
3.529 |
|
600 .
. . . . |
20.164 |
18.929 |
10.301 |
8.036 |
12.926 |
14.658 |
22.101 |
3.662 |
|
800 .
. . . . |
24.297 |
22.715 |
11.025 |
9.597 |
15.297 |
17.431 |
26.299 |
3.836 |
|
1000 .
. . . . |
27.300 |
25.246 |
11.515 |
10.749 |
16.893 |
19.470 |
29.444 |
3.991 |
|
1200 .
. . . . |
29.169 |
26.932 |
|
|
|
|
|
4.110 |
|
|
|
|
|
|
|
|
|
|
|
B
M/(g·mol−1) |
CO2
44.010 |
CS2
76.143 |
Cl2
70.905 |
D2
4.028 20 |
H2
2.015 88 |
HCl
36.4606 |
H2O
18.0153 |
H2S
34.082 |
|
T/K |
|
|
|
|
|
|
|
|
|
298.15 .
. . . |
4.466 |
5.494 |
4.082 |
3.511 |
3.468 |
3.504 |
4.040 |
4.112 |
|
400 .
. . . . |
4.970 |
5.967 |
4.242 |
3.517 |
3.510 |
3.512 |
4.121 |
4.280 |
|
600 .
. . . . |
5.692 |
6.575 |
4.400 |
3.563 |
3.527 |
3.555 |
4.369 |
4.684 |
|
800 .
. . . . |
6.186 |
6.913 |
4.470 |
3.668 |
3.563 |
3.671 |
4.657 |
5.113 |
|
1000 .
. . . . |
6.532 |
7.125 |
4.508 |
3.805 |
3.633 |
3.805 |
4.963 |
5.507 |
|
1200 .
. . . . |
6.776 |
7.270 |
4.533 |
3.940 |
3.727 |
3.933 |
5.264 |
5.828 |
|
|
|
|
|
|
|
|
|
|
|
B
M/(g·mol−1) |
N2
28.013 48 |
NH3
17.030 56 |
NO
30.0061 |
NO2
46.0055 |
N2O
44.0129 |
O2
31.9988 |
SO2
64.065 |
SO3
80.064 |
|
T/K |
|
|
|
|
|
|
|
|
|
298.15 .
. . . |
3.503 |
4.288 |
3.589 |
4.409 |
4.671 |
3.533 |
4.799 |
6.098 |
|
400 .
. . . . |
3.517 |
4.659 |
3.602 |
4.919 |
5.039 |
3.621 |
5.215 |
6.913 |
|
600 .
. . . . |
3.622 |
5.443 |
3.757 |
5.514 |
5.888 |
3.859 |
5.911 |
8.108 |
|
800 .
. . . . |
3.780 |
6.165 |
3.941 |
5.920 |
6.360 |
4.057 |
6.304 |
8.748 |
|
1000 .
. . . . |
3.932 |
6.798 |
4.087 |
6.229 |
6.634 |
4.194 |
6.545 |
9.125 |
|
1200 .
. . . . |
4.056 |
7.341 |
4.195 |
6.462 |
6.812 |
4.290 |
6.706 |
9.367 |
|
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M.L. McGlashan |
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