And so when we add the H plus ions into our mixture, some of those conjugate based molecules, the acetate ion reacts with those H plus ions forming acetic acid. And that decreases the amount of H plus ions. It consumes, some of those H plus ions so that a PH does not change as drastically as it does in this particular case. So, to see what we mean from a mathematical perspective, let's take a look at the following equation. So basically, what we want to derive is an equation known as the Henderson Hasselbalk equation that you should be familiar with because it comes from general chemistry. So basically, this equation is convenient when we're trying to determine the buffet systems that we want to use.