VALUE OF SOME COMMAN GASES

Value of Cp     and Cv  for some common gases.


Name of Gas

     Cp

(KJ/Kg K)

     Cv

(KJ/Kg K)

¥ = Cp / Cv

Air

1.000

0.720

1.40

Carbon dioxide (CO2)

0.846

0.657

1.29

Oxygen (O2)

0.913

0.653

1.39

Nitrogen (N2)

1.043

0.745

1.40

Ammonia (NH4)

2.177

1.692

1.29

Carbon monoxide (CO)

1.047

0.749

1.40

Hydrogen (H2)

14.257

10.133

1.40

Argon (A)

0.523

0.314

1.67

Helium (He)

5.234

3.153

1.66

Methane (CH4)

2.169

1.650

1.31


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