Now, let's write the equilibrium constant stress in the same way we did for water for this acid. So ka, our acid annetzation constant is equal to our concentration of our hydronium times, the concentration of the conjugate base. Now, in this case, our conjugate base is simply this guy here. Now, both guys are included in our numerator because both guys are in aqueous form. Remember, liquids and solids are not included. And that's why we didn't include these two water molecules.