So the first part of this question, we have 0.25 Moeller manage for BR Mr An Ionic salt that in water is gonna dissociate to an inch four plus and B R minus. So we didn't take these. Basically, take the effects of each views in water one at a time. Let's start with the arm eyes does gonna be released. Br minus is the conjugated base of HBR, which is an acid, and HBR is on the strongest assets we know And remember The continent base of a strong asset is very weak. And so this has no effect. It's not gonna be at all basic. Um, it's not acidic either. Um, now, an itch for plus is the conjugal acid of NH three, and X three is a weak base. And so Inish four plus is going toe have some acidity to it. It's not going to be like, not at all acidic. There's gonna be something to it. In fact, you can look up the tay of NH four plus part of it, and it is equal to ah, 5.8 times 10 to the negative 10th. And so we're gonna do it. We're gonna 0.25 Moeller of NH four plus and use this K with a nice table in order to get an answer as to what the pH is So remember, we have an itch for class, and water is going to become aged 30 plus and NH to you. And so we have nice table. You always ignore water. The initial concentration manage four plus is right up here 40.25 The initial concentration of these is always zero. In these simple asset base problems, the changed in the minus X plus X plus x so 0.25 minus X accidents. So now I'm gonna write out the mass action expression que treacle a concentration of h 30 plus times the concentration of NH three over the concentration of an age four plus that comes from the fact that we take the products of all of the products here and then over the concentration reactions and plugging in. We're going to get X squared from clogging in this and this right here in here over 0.25 minus x. Now, because 0.25 any much larger than whatever axes X to be like something times 10th and fifth. Probably look for that. And so this is a pretty simple problem. We have this value for K, and when you do that, you love it and you're gonna find that X is going to equal. Hey, what's the Number? X is also going to be equal to the concentration of age three applause, which is how we're gonna use it to get the pH. And so the conscious of the value of access issues. The concentration of HBO plus is equal to 1.20 times sense negative. Fifth. And so remember, the P H is equal to the negative log of the concentration of hydro knee. Um, it's Theo Plus, and so plugging that in will be able to get the pH, which is going to be equal to 4.9 to next problems. We have a zinc chloride. This is going to do so state into chloride minus ends in two. Plus chloride has the exact same thing is going on us with grow me bromide where this is the concrete base of HCL, which you should know is a very strong acid. So this has a negligible basis city not basically all will have any effects. If you had just seal minus in water, Ph would be seven zinc. However, it is a highly charged metal ion and were actually given a k A. For this, um, the K A is equal to 2.5 time sensitive 10th. Um, you should know that metal islands are commonly Lewis assets, and, um, that's how they're gonna be acidic. Um, the concentration of this salt, we have this point for Mueller, and so that's how much I think we're gonna have. And actually, if you take a look, this is an identical problems. What we had above, we have some acid, and it's four plus at a certain concentration and we can were given today we're gonna do the exact same thing. We're gonna just skip over to this step right here where we have the K is equal to x squared over the initial concentration, so que a right here is gonna be equal to X squared over 0.4 initial concentration, and that will give us a value for X, which I'm actually gonna skip ahead because this X is gonna equal to the concentration HDL plus just like it was above. And so Ph remembers equal to the negative log the concentration of H 30 plus. She will plug in whenever you get, And in the end, you're gonna get the at the actors five. Exactly. Which is a nice slow quist.