 This problem so calculate the proton concentration of a solution in which the pH is 5.92 So this problem gives us the pH 5.90 And we also know the equation for pH you guys remember it don't look at that pH H3O plus concentration right yeah, good job if you got it very good job, okay, but this Already gives us the pH right we need to look for this number here So how did we do that? remember We want to isolate the variable, right? So what are we going to do? We're going to multiply both sides by negative one So we get negative pH equals the log the H plus concentration And you guys remember what the inverse of the log is? Yeah, raise it to the 10th right so 10 or not raise it to the 10 to the whatever, right? 10 to the negative pH equals the concentration of Hydrogen or the proton concentration Okay, so all you got to do is plug it into your calculator now 10 raised to the negative 5.92 and You should expect To get something around because this is about 6 right? So you should expect to get something about 10 to the negative 6 if you got something like that then you're good Okay, so what do you guys get? 1.2 right times 10 to the negative 6 Is that it? Molar right Okay, so remember pH units is just nothing right or pH You got to stick that molar on there. Okay, remember if it's in brackets here That means concentration Okay, and again remember this is close to six So we should be thinking that we're gonna have something like negative six you know if it was like six point one two you know this would be Still around six so it would be to the negative fifth at that point, okay, but So any you're looking for a number that's somewhere around so everybody cool with that Are any questions on that one? So you guys are pretty good at these by now, right? So remember they both be some of these on the test so