Home / Chemical Engineering / Chemical Engineering Thermodynamics :: Discussion

Discussion :: Chemical Engineering Thermodynamics

  1. For a real gas, the chemical potential is given by

  2. A.

     RT dlnP

    B.

     RT dlnf

    C.

     R dlnf

    D.

     None of these

    View Answer

    Workspace

    Answer : Option B

    Explanation :

    We know the property relation dG=VdP−sdT     for constant temperature dT=0
    For an ideal gas
    dG=VdPdG=RTPdP⇒dG=RTdlnP
    For a real gas also if we want to describe the relation in the same functional form we express it as dG=RTdlnf⇒dμ=RTdlnf       where f= fugacity, that means we buried the entire non ideality in this term fugacity. The term fugacity is also called as effective pressure.


Be The First To Comment