Specific Heat Common Gases at Various Temperatures

Thermodynamics Related Resources

Specific heat is the amount of heat needed to raise the temperature of one gram of mass by 1 kelvin. Heat capacity is an extensive property of matter, meaning it is proportional to the size of the system.

Ideal-gas specific heats of various common gases at various temperatures

Temperature,
K
cp
kJ/kg · K
cv
kJ/kg · K
k
cp
kJ/kg · K
c
kJ/kg · K
k
cp
kJ/kg · K
cv
kJ/kg · K
k
Air
Carbon dioxide, CO2
Carbon monoxide, CO
250
1.003
0.716
1.401
0.791
0.602
1.314
1.039
0.743
1.400
300
1.005
0.718
1.400
0.846
0.657
1.288
1.040
0.744
1.399
350
1.008
0.721
1.398
0.895
0.706
1.268
1.043
0.746
1.398
400
1.013
0.726
1.395
0.939
0.750
1.252
1.047
0.751
1.395
450
1.020
0.733
1.391
0.978
0.790
1.239
1.054
0.757
1.392
500
1.029
0.742
1.387
1.014
0.825
1.229
1.063
0.767
1.387
550
1.040
0.753
1.381
1.046
0.857
1.220
1.075
0.778
1.382
600
1.051
0.764
1.376
1.075
0.886
1.213
1.087
0.790
1.376
650
1.063
0.776
1.370
1.102
0.913
1.207
1.100
0.803
1.370
700
1.075
0.788
1.364
1.126
0.937
1.202
1.113
0.816
1.364
750
1.087
0.800
1.359
1.148
0.959
1.197
1.126
0.829
1.358
800
1.099
0.812
1.354
1.169
0.980
1.193
1.139
0.842
1.353
900
1.121
0.834
1.344
1.204
1.015
1.186
1.163
0.866
1.343
1000
1.142
0.855
1.336
1.234
1.045
1.181
1.185
0.888
1.335
Temperature,
K
Hydrogen, H2
Nitrogen, N2
Oxygen, O2
250
14.051
9.927
1.416
1.039
0.742
1.400
0.913
0.653
1.398
300
14.307
10.183
1.405
1.039
0.743
1.400
0.918
0.658
1.395
350
14.427
10.302
1.400
1.041
0.744
1.399
0.928
0.668
1.389
400
14.476
10.352
1.398
1.044
0.747
1.397
0.941
0.681
1.382
450
14.501
10.377
1.398
1.049
0.752
1.395
0.956
0.696
1.373
500
14.513
10.389
1.397
1.056
0.759
1.391
0.972
0.712
1.365
550
14.530
10.405
1.396
1.065
0.768
1.387
0.988
0.728
1.358
600
14.546
10.422
1.396
1.075
0.778
1.382
1.003
0.743
1.350
650
14.571
10.447
1.395
1.086
0.789
1.376
1.017
0.758
1.343
700
14.604
10.480
1.394
1.098
0.801
1.371
1.031
0.771
1.337
750
14.645
10.521
1.392
1.110
0.813
1.365
1.043
0.783
1.332
800
14.695
10.570
1.390
1.121
0.825
1.360
1.054
0.794
1.327
900
14.822
10.698
1.385
1.145
0.849
1.349
1.074
0.814
1.319
1000
14.983
10.859
1.380
1.167
0.870
1.341
1.090
0.830
1.313

Source: Kenneth Wark, Thermodynamics, 4th ed. (New York: McGraw-Hill, 1983), p. 783, Table A–4M.

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