And what's the rate law for the formation of this enzyme substrate complex? Well, that is given by equation two. So the rate of formation of this enzyme substrate complex is equal to the product of the rate constant K one, and the concentrations of these two reactants, so E and S. Now, once we form the es. The Es can basically go in two different ways. It can either go on and form this product, which is basically this equation number one that we described here, or it can go back and reform these two reactants. And equation three gives us the dissociation of that substrate from that enzyme.