Avogadro's law states that at a given temperature and pressure, w...

Question

Avogadro's law states that at a given temperature and pressure, what quantity is constant?

Accepted Answer

Alright, So here we're dealing with avocados law. So it says according to avocados law, blank is constant at a given temperature and pressure. Alright, so avocados law deals with a number of moles of gas and volume. Okay. And it says that they are directly proportional to one another. One increases the other one increases, or one decreases the other one increases as well. If we take a look at the ideal gas law equation, p vehicles and our team obviously we have to have constant temperature and pressure, so temperature and pressure are the same. R gas constant is also always the same as constant. I mean not the same. Um so we have V equals to enter it. So we're not saying that they're going to equal to one another necessarily, but we can see that they are directly proportional. Okay, So what is always going to be constant? Well, if we take a look at these options here, we're never going to be subtracting or adding end to 2 V2 the volume. So this doesn't make sense. Okay, in order to actually um you know, move one of these variables to the same side. We actually need to divide them. Right? So we either need to divide and by both sides and we're going to have the over end or we need to divide V by both sides and we're going to have n over V. Okay, so those are the only options that we have here that are always going to be constant. So it's always going to be this ratio of volume to moles of gas or moles of gas to volume is always going to be um, the same. Right? So we're never going to be multiplying them. It's actually just a ratio. Okay, so it doesn't matter what we increase the volume to the the end is going to increase by that same, you know, by the same ratio. So when you divide the over end, you're going to have the same number. So for example, if we have, oops, if we have V one over N one, right, we have one volume and one moles of gas and then we change something. Right? So we're gonna let's say add more More um more moles of gas. We're going to have two different sets of variables. Right? So we're going to have end to end this V two. Now these numbers are going to equal 11 another because they are increasing and decreasing, but the same ratio. So let's say, you know, this was too, and this was to for example, right? And then we're going to increase them. Bye bye. Three. Right, So this is going to be six and this is going to be six. So when you divide that, you always get one. So I just speak to really easy numbers. But I'm just saying that that ratio of V over N or either and over V is always going to be constant. No matter what, you change those two numbers to as long as we're at the same temperature and the same pressure, Right, folks, thank you so much for watching.

Avogadro's law states that at a given temperature and pressure, what quantity is constant?

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