This guy has three H plus ions that he can donate. So in the same way that we spoke about ionization reactions of monopolytic acids, we can also talk about ionization reactions of polyphotic acids. So let's look at a hypothetical example of a polyphotic acid, h two A. Now, for H two A, we're not going to have one reaction. We're going to have two reactions. And that's because we have two potential HS that can be lost to our environment.