So we have all of these solutions and we're attempting to match them to a few marks on a ph scale. And, uh, with so many of the solutions, uh, it's, ah, a bit too time consuming to attempt to go through all of the details of each calculation. But if you have been working the earlier problems in the chapter than you are familiar with the K and K B calculations and frequently we write wind up with with, um, X equals the square root of I'm sorry. That's the square root of Casey. The equilibrium, constant times the concentration. Now for the first solution, the sulfuric acid that is a strong acid. And so we don't have to do any equilibrium Calculation at a point. 01 Moeller, if you take the log of point of one, you get to and there will be additional age plus from the second dissociation. And so the pH should be less than two. And so that doesn't really looks like one of the Marxist around 2.1. And so that one does not match up. The ammonium chloride, um, has a pH. Around 4.6. So I had to take the K B for ammonia and used the K W and the K B to get the K A. And so that's Casey. And let's see 4.6. Yeah, that could be Ah, looks to me like that. Mark is at 4.7, but it looks like that one matches the mark there. That's close to five. Ah que i the potassium and the iodine are both acid based Spectators, and so this is a pH neutral solution Ph. Seven solution. And so that is not ah marked on the scale said that one also doesn't match up the metal. A mean I looked up its kay bee and it's high and the polarity is low. And that is the indication that you are not going to be able to do square root of Casey. But rather the initial concentration minus sex. Times K is equal to X squared, and rather than taking the square root of both sides, we have to multiply it out. Anyway, I come up with a pH of 3.13. Does not look like that is marked on the scale here. Ah one. Mueller H oocl Ah, I looked up. It's k A and uh Oh, I'm sorry. Hold on, let me back up. 12 the ammonium. Ah, the middle mean. Ah, that X that I get is not for age plus before oh, age minus. And so this is the P. O. H. And the P H would be 10.87. And there is indeed a mark there. So that that is thedc 0.87. And what did we say? The 4.6 there. And OK, so now continuing with the HCL. I'm sorry. It comes out. Ah, around 3.8. There is nothing marked at 3.8. Um, let's see, We're looking for the one that's gonna pH around, too, and that happens to be the chloral acetic acid. So I looked up. It's k A. And ah, it, um, has a very high K 1.4 times 10 to the minus three. This is a rough estimate, because actually that is 16% association. And so, taking the square root of Casey, you're gonna be significantly off. Ah, but ah, that looks like here were 6% of the initial concentration by on so dropping the X puts us a little off, but this one's going to be close to, uh, 2.5, and it looks like that Mark is closer to around 2.1. And so that is the 3rd 1 The ah chloral acetic acid. It's probably it's Ph is closer to 2.2. We would get a little less value than that, so I'm going to say 2.2, and this one is going to be a very close to 2.5, and so we have matched up some of them.