And if our Ka is low, if it's less than one, we're dealing with a weak acid. Now, by strong acid, I simply need an acid that's willing to dissociate, that's willing to go from this form to this form. So therefore, if our Ka is high, that means the concentration of these guys is high and the concentration of this guy is low. And that makes sense. Now let's look at polyphonic acid. Polyportic acids are those acids that can donate more than one H plus ion.