[BSengupta]

I have question related to the calculation of Cp, Cv of reacting gas species.
When we have normal air, we get Cp and Cv by something like this:

basicThermo& thermo; 
thermo.Cv()

source: https://github.com/Unofficial-Extend.../numericFlux.H, https://github.com/Unofficial-Extend.../numericFlux.C



But in case of reacting gas of several species, what should I replace 'basicThermo' with?