Question

How do you calculate CP CV for gas mixture?

Answer 1

In short the specifics heats Cp & Cv of a gas mixture are not that given by the sum of specifics heats of the individual gases. They are equal to the sum of (mass fraction x heat specific) related to individual gas. If cp or cv is given in kJ/kgK multiply by the mass fractions.

• The specific heat of mixture contains also the part, connected with interaction of molecules. At high densities and low temperatures this part may be large enough to influence the resulting heat capacity.

• So in order to find out the Cp value for CO2-NH3 (1:1) gaseous mixture, you mean I have to do this

So in order to find out the Cp value for CO2-NH3 (1:1) gaseous mixture, you mean I have to do thisSpecific heat of CO2-NH3 gaseous mix= 0.5x(specific heat of CO2 + Specific heat of NH3)