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