 Okay, so let's do one of these acid-base reactions, another one. It says given that Ka for the ammonium ion is 5.75 times 10 to the negative 10th, and the Ka for carbonic acid H2CO3 is 4.37 times 10 to the negative 7th. Calculate the KEQ and predict the position of the equilibrium in the following acid-base reaction. Please explain for full credit. So the first thing you have to remember in order to do this is the KEQ equation in relation to Ka. Do you remember that one? Yeah. Okay, so let's write that down. So the KEQ equals what? The reactants of a product. Well, it's the Ka of the reactant acid. Okay? So if you just say reactants of a product, people will be like, no, that's not right. Okay? So you've got to say Ka of the reactant acid over the Ka of the product acid, okay? So now we've got to figure out, well, it's a good thing they gave us these two Ka's, right? So we don't have to look on the latest, but which one of these is the acid, NH3 or H2CO3? H2CO3, okay? How do you know that? Yeah. You look at the products over there and you see that the hydrogen has been added to this thing, okay? Or removed from this thing, okay? So this is the, what we say the reactant acid and which one of these is the product acid? Left or left? Left, okay? The product acid. Okay? And the cool thing about when they give us the Ka's is we don't have to translate from the PKs to the Ka's. So this is more like a plug and chuck type thing, but you do need to have a calculator in order to do this thing, unless you're really good at doing this thing. So the Ka of the reactant acid is going to be this one. Everybody's got that, right? 4.3 times 10 to the negative 7. And the Ka of the product acid is 5.75 times 10 to the negative 10. Okay? You have our calculators and you should expect that since the smaller number is on the bottom, that this number is going to be bigger than one. Okay? So that's a way to kind of check yourself. And if we look at it, yeah, it's 760, you know? So that's bigger than one. In fact, let's draw it as, let's write it as 7.60 times 10 to the 2. Okay? That really shows us that it's bigger than one. Okay? So since the KEQ is bigger than one, what does that mean for the reaction? That reactants or the products are bigger? Products. Products are bigger. Okay? So since this is bigger than one, if we were to draw these arrows in, we're going to draw them like, so in other words, the, any other questions? Questions? No? I can see some inquisitive wheels turning, but no questions. Okay.