Using the thermodata computed from the matlab functions to compute the mixture-averaged mass specific Gibbs free energy of the final mixture, as a function of the progress variable (normalized as: 0 for no dissociation, and 1 for complete dissociation). Plot the result in a similar way as Fig. 2.11 for entropy in the textbook. Mark the equilibrium solution on the profile and see whether the Gibbs free energy reaches minimum at equilibrium (for constant T and P). Make sure you have sufficient number of (say at least 5) points to plot a smooth profile.