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Essentials of Chemical Reaction Engineering by H. Scott Fogler

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Appendix C. Thermodynamic Relationships Involving the Equilibrium Constant1

For the gas-phase reaction

2-2

image

  1. The true (dimensionless) equilibrium constant is

    RT lnK = –ΔG

    Where G is the Gibbs Free Energy and R is the ideal gas constant.

    image

    where ai is the activity of species i

    image

    where

    fi = fugacity of species i

    image = fugacity of species i at the standard ...

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