So, to see what we mean, let's compare the PKA values of these two reactions. So, remember, the lower the PKA value, the better the acid. Now, if we take just plain water and we allow water to dissociate into H plus ions and these hydroxide ions, the PTA value is 15.7. And this is a very high value. And what that or a relatively high value. And what that means is this will not be a good enough acid.