the concentration also referred to as the soluble bility of a dissolved gas can be determined from its pennies law constant and partial pressure. Now, one essay, Henry's law constant. That's the variable K. Sub H. And it represents the song ability of a gas at a fixed temperature in a particular solvent in malaria. T. Which remember use the variable capital. And also remember we've discussed this before, where concentration polarity are synonymous with one another. Usually professors will interchange them. We can say concentration or polarity. They mean the same thing with this idea of Henry's law constant. Comes Henry's law formula where s gas, which equals the Saudi ability of a gas in polarity equals Henry's constant, which is K. H. And here it's in units of polarity overpressure. So our normal type of pressure is atmospheres. But remember there's a possibility of tours or millimeters of mercury as well. So always be on the lookout for the units that you'll see for Henry's law constant. Usually you'll see it in polarities over atmospheres, but there can be times before. You might see it in polarities over tours or polarities over millimeters of mercury. If it makes you feel more comfortable, just convert those precious units all two atmospheres and use this version of Henry's law constant now. And that's times P gas P gas is the partial pressure of the gas in atmospheres. And again, units are always important. The units here for partial pressure and atmospheres, because we're using these units for Henry's Law constant polarity over atmospheres.

So now we take a look at Henry's law at least in terms of the 2.4, we're gonna say the two point format. Henry's Law formula illustrates how changes in pressure. Yeah, can affect gas solid ability. Now we're gonna say this formula, this version is used when dealing with two pressures and with two psy abilities for giving gas. Here, we're gonna say with this formula, the units from Saudi ability can be in polarity or they can be in other units, there are in mass per volume. So Henry's Law formula, the two point form is sly ability one, which is your initial so liability over your initial pressure P one equals side ability to so your final side ability Divided by a final pressure p. two. So again we use this version when we're dealing with two side abilities or to pressures for any given gas.