In this lecture we're going to talk about the concept of conjugate acidbased pairs. So whenever we have an acid that donates an H plus ion to a base, a new base and a new acid are formed. So, for example, let's look at the reaction of acetic acid and water. So in this case, our bronze and Lyley acid is our acetic acid and our bronchylori base is our water. And that's because this guy has an extra H ion. It donates that H plus ion.