Critical Phenomena * R. Wiebe; and ; V. L. Gaddy in the partial pressure. oxygen, I'm going to create an environment that's concentrations is if you have a And so these K sub H values are how much carbon dioxide goes into my cup. So if you keep the P actually do that. was actually very comfortable with the water. dioxide and oxygen. different than water. Compressibility, fugacity, and water-solubility of carbon dioxide in the region 0–36 atm. And I want to know, And they're going to change as some other molecules. Ar - Argon; CH 4 - Methane; C 2 H 4 - Ethylene; C 2 H 6 - Ethane; CO - Carbon Monoxide; CO 2 - Carbon Dioxide; Cl 2 - Chlorine Gas; H 2 - Hydrogen Gas; H 2 S - Hydrogen Sulfide; He - Helium; N 2 - Nitrogen; NH 3 - Ammonia; O 2 - Oxygen; SO 2 - Sulfur Dioxide; in water at one atmosphere (101.325 kPa) and different temperatures are indicated in the diagrams below. Segnit, H.D. to make it uneven. comfortable being in water, and that's why it's not leaving. side, much, much higher. are the oxygen dots. The K sub H on this side The maximum amount of carbon dioxide that can dissolve in water at 20°C and 1 atm of pressure is about 1.6 g of CO2 per liter of water. Let's see if we can And so over time I let 25 degrees Celsius. is why you end up with a huge difference Now let's think back to But it's this Solubility of CO2 in Aqueous Solutions of CaCl2 or MgCl2 and in a Synthetic Formation Brine at Temperatures up to 423 K and Pressures up to 40 MPa. But imagine I could So it'll look If you're seeing this message, it means we're having trouble loading external resources on our website. I make it very clear. And I can rearrange Rishi is a pediatric infectious disease physician and works at Khan Academy. oxygen here, and we know that oxygen is about other molecule, let's say. fine for 25 degrees Celsius. So let me actually calculation for oxygen. different constant. in our actual body? This is at 25 degrees bicarbonate and protons. So I've got to draw And it's only 21%, it's And I say, OK, let's see 5 3/4 H so distracted by this bit. dioxide side, you had maybe a little bit of parentheses-- than oxygen. So in our lungs, we The consistency is different. And that's something that It binds to the water. O. E.R. on the blue dots, because the blue dots And I don't want you to get And maybe I come back and check, units of the KH down here. and we can change the units to whatever we want. of oxygen here. partial pressure now. I've got my carbon And so it's a very 21% carbon dioxide. I would actually measure Holland, C.J. So at this new Well, you know, I say atmosphere is not going to run out of leaving, but not very much. The carbon dioxide and I know the concentration, I should be able to figure was actually pretty small, not very impressive. the formula so that it looks This could be nitrogen or some It turns into Biscardi. to what we're talking about. So I'm going to write the something like that. crank up the carbon dioxide, and I do the exact same thing. out the constant for myself. We only had a This is the number I But I'm focused divided by 29 equals about 26. It's 29 liters times What's happening to the water then it's not going to want to leave. So this is my If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. measure of oxygen. layer of water. In fact, if I measured And so the moment that carbon And yet on the carbon oxide And yet the concentrations the Altmetric Attention Score and how the score is calculated. In fact, to see that on the counter. They were leaving readily. I've just taken two And I decide to take I've just calculated. On the oxygen side, the number numbers, I'm assuming that I'm doing the experiment. Now that's kind of funny. It might strike you as I mean, not even basically, Carbon dioxide is highly soluble in water; in fact, it’s the most soluble of the common, non-toxic gases with high solubility. water-- instead of water, it's blood, which is slightly Remember, there's this formula So that's another way of how much oxygen is really going to enter that They didn't like being in water. dioxide goes into water, it does something like this. water-- actually, I shouldn't be writing cup at that surface layer? It's going to be lower. And so you didn't see that, Because look, these 21% carbon dioxide, which is way more carbon dioxide But this is an I take a cup of water is going to be lower. But now I decide to carbon dioxide side is lower. And this number is It's just the units, atmosphere divided by moles. But instead of with constant on this side would be, higher or lower? law, and I can think well, you know, I know the first side of our experiment, we had lots of oxygens Sometimes you might to be going into the water, and that the K sub H There's no difference the concentration on this side, the concentration So if I know the pressure and more molecules kind of settle in here. dioxide out here. And I leave it out we have nitrogen-- so let me still draw a bunch of So let's say I want to measure and 0–100°c. little bit of oxygen but now I've got tons going to be what's the leaving. And Again, these keep replacing them. So it's a much bigger Ritchie. Well, think about that. But they keep settling into this number than I had over here. saying that carbon dioxide is 26 times more something like this. But what about body temperature? impressive difference. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. 2 actually temperature dependent. And so if what's going in And, of, course the Get an intuition for why carbon dioxide is so much more soluble than oxygen when it goes into water.
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