So a catalyzed and an uncatalyzed reaction will have the same exact Gibbs free energy value. And that leads us to a very important point. Enzymes, when they act on chemical reactions, they do not affect the Gibbs free energy value. They do not change the energy of the reactants, nor they actually change the energy of the products. And that's exactly why the difference, namely the delta g that gives free energy will remain exactly the same when an enzyme is used or when an enzyme is not used. Now, the final thing I'd like to mention about Gibbs free energy is what happens if Gibbs free energy is equal to zero?