La llei de Henry relaciona la solubilitat d’un gas en un líquid amb la pressió parcial de dit és la constant de Henry, que depèn de la naturalesa del gas, de la. Ley de Henry. STRATEGIZE Raoult’s law relates the vapor pressure of a solution to the mole fraction of the solvent and the vapor pressure of the pure solvent. Citation: Armougom F, Henry M, Vialettes B, Raccah D, Raoult D Using a weight loss program, Ley and colleagues [7] demonstrated that a.

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The activity coefficient can also be obtained for non-volatile solutes, where the vapor pressure of the pure substance is negligible, by using the Gibbs-Duhem relation:. Relevant discussion may be found on the talk page. For non-ideal solutions, the activity coefficients of the components must be taken into account:.

So a guy named William Henry– and actually Henry was his last name– came up with this fantastic formula.

Hemry an equation showing the dissociation.

The total pressure is simply the sum of the partial pressures. So now let me actually ask you to try to focus on this little green molecule, this little fella right here, this guy.

You might see p re concentration times K with the little h. If the vapor pressure of a mixture is lower than expected from Raoult’s law, there is said to be a negative deviation.


This article possibly contains original research. There are many alternative ways to define the Sechenov equation, depending on how the aqueous-phase composition is described based on concentration, molality, or molar fraction and which variant of the Henry’s law constant is used. Underwater diving physiology Underwater diving physics Physical oceanography Commons Glossary Lfy This type is called the “intrinsic” or “physical” Henry’s law constant.

Llei de Henry

So which is it? You’re just watching the surface layer of water. This law is known as Henry’s law. Articles related to solutions.

This page was yy edited on 13 Decemberat In general, the solubility of a gas decreases with increasing salinity ” salting out “. Views Read Edit View history. There are several variants of both fundamental types. Physical chemistry Equilibrium chemistry Engineering thermodynamics Gas laws Raoulg diving physics. When I say solute, you basically can think of these green molecules. This phenomenon is the basis for distillation. O2 and CO2 solubility. Thus, the Sechenov equation can be written as.

In other words, having a higher partial pressure will cause more of the molecules to actually switch from the gas part of this cup into the liquid part of the cup. The American Society of Mechanical Engineers.

Henry’s law (video) | Gas exchange | Khan Academy

Please help improve this article by adding citations to reliable sources. Assuming ideal behavior, calculate the vapor pressures of each of the components and the total vapor pressure above the solution.


In geochemistrya version of Henry’s law applies to the solubility of a noble gas in contact with silicate melt. About project SlidePlayer Terms of Service. The magnitude of the answer is about right because the calculated vapor pressure of the solution is just below that of the pure liquid, as expected for a solution with a large mole fraction of solvent. The density of the pure water is also provided.

La Ley de Henry

And the liquid I’m going to use is H2O, or water. You’d agree that that’s something he could do, right? The more similar the components are, the more their behavior approaches that described by Raoult’s law. OK, so now you figure out the concentration of green molecules in the surface layer. When the cohesive forces between like lwy are greater than the adhesive forces between dissimilar molecules, the dissimilarities of polarity leads both components hejry escape solution more easily.

Alveolar gas equation – part 2. The Henry’s law constants mentioned so far do not consider any chemical equilibria in the aqueous phase.