And to see what we mean, let's take a look at this reaction mechanism that takes place inside the active side of carbonic and hydrates. So in the first step, we essentially form this complex that consists of the water molecule bound onto that zinc. So what happens is the oxygen of this water contains a partial negative charge because, remember, it's more electronegative than either one of these H atoms. And so because of that partially negative charge on the oxygen it will be attracted to the positive two charge on the zinc. And that will form this bond, as shown here. Now, what that means is, because this oxygen is interacting with the zinc, the interaction between the oxygen and either one of these H atoms will not be as strong.