In this lecture we're going to talk about ionization constants of basis known as KB. But before we talk about this guy, we really have to understand these two components. So, if you have already done so, watch the video below on Otoinisation of water and Annetzation of acids. Now, so let's begin. Let's suppose we have some hypothetical base, let's call it A. And this base in aqueous state reacts with a single water molecule in a liquid state.