How do you find K in Henry's Law?

Asked By: Barbora Fantozzi | Last Updated: 30th May, 2020
Category: science physics
4.2/5 (86 Views . 16 Votes)
Values for Henry's law constants are expressed in units of atmospheres for air to moles per cubic meter for water (atm-m3/mol) or in a dimensionless unit described as KH = KH/(RT) where KH is the dimensionless Henry's law constant, KH is the Henry's law constant (atm-m3/mol), R is the ideal gas constant (8.20575 × 10

Click to see full answer


Subsequently, one may also ask, what is Henry's Law in thermodynamics?

It states that: At a constant temperature, the amount of a given gas dissolved in a given type and volume of liquid is directly proportional to the partial pressure of that gas in equilibrium with that liquid.

Similarly, what does Henry's law constant mean? Henry's law constant (HLC) is a measure of the concentration of a chemical in air over its concentration in water.

Also asked, what is the value of Henry?

The henry (symbolized H) is the Standard International ( SI ) unit of inductance . Reduced to base SI units, one henry is the equivalent of one kilogram meter squared per second squared per ampere squared (kg m 2 s -2 A -2 ).

Why is Henry's law important?

The main application of Henry's law in respiratory physiology is to predict how gasses will dissolve in the alveoli and bloodstream during gas exchange. The amount of oxygen that dissolves into the bloodstream is directly proportional to the partial pressure of oxygen in alveolar air.

35 Related Question Answers Found

What is the difference between Dalton's law and Henry's law?

Terms in this set (8)
-Dalton's law is important for understanding how gases move down their pressure differences by diffusion. -Henry's law helps explain how the solubility of a gas relates to its diffusion. -each gas in a mixture of gases exerts its own pressure as if no other gases were present.

What are the limitations of Henry's Law?

Limitations of Henry's Law : Henry's law is applicable only when. - The pressure of the gas is not too high and temperature is not too low. - The gas should not undergo any chemical change. - The gas should not undergo association or dissociation in the solution.

What is Raoult's Law and Henry's law?

Raoult's law is used in a case where the solute (the smallest component of the solution) is non-volatile. Henry's law will give you the molar concentration of a dissolved gas in the solution, Raoult's law will give you a vapor pressure over a solution after you mixed a solvent with a non-volatile solute.

What affects Henry's law constant?

Effect of Pressure on the Solubility of Gases: Henry's Law. Because the concentration of molecules in the gas phase increases with increasing pressure, the concentration of dissolved gas molecules in the solution at equilibrium is also higher at higher pressures.

What are the applications of Henry's Law?


Important applications of Henry's law: 1) In packing of soda cans: Soda water bottles are always packed under higher pressure to increase the solubility of CO2 gas. 2) In deep-sea diving: Nitrogen is more soluble than Helium in our blood. In the deep sea, the pressure is higher than at the surface of the water.

How do you convert Henry's law constant?

To compute the dimensional Henry's constant in units of atm-m3/mole, multiply the dimensionless Henry's constant by the universal gas constant (0.000082 atm-m3/mole-ºK) times the temperature in degrees kelvin, which is equal to 0.0224 at 0ºC and 0.024 at 20ºC.

What does Boyle's law state?

Boyle's law states that at constant temperature the volume of a given mass of a dry gas is inversely proportional to its pressure.

What is the unit of Henry's constant?

Values for Henry's law constants are expressed in units of atmospheres for air to moles per cubic meter for water (atm-m3/mol) or in a dimensionless unit described as KH = KH/(RT) where KH is the dimensionless Henry's law constant, KH is the Henry's law constant (atm-m3/mol), R is the ideal gas constant (8.20575 × 10

How do you determine solubility?

Solubility indicates the maximum amount of a substance that can be dissolved in a solvent at a given temperature. Such a solution is called saturated. Divide the mass of the compound by the mass of the solvent and then multiply by 100 g to calculate the solubility in g/100g .

What is Raoult's Law used for?


Raoult's law (/ˈr?ːuːlz/ law) is a law of thermodynamics established by French chemist François-Marie Raoult in 1887. It states that the partial pressure of each component of an ideal mixture of liquids is equal to the vapour pressure of the pure component multiplied by its mole fraction in the mixture.

What does Dalton's law state?

In chemistry and physics, Dalton's law (also called Dalton's law of partial pressures) states that in a mixture of non-reacting gases, the total pressure exerted is equal to the sum of the partial pressures of the individual gases.

What is Charles gas law?

Charles's law (also known as the law of volumes) is an experimental gas law that describes how gases tend to expand when heated. A modern statement of Charles's law is: When the pressure on a sample of a dry gas is held constant, the Kelvin temperature and the volume will be in direct proportion.

Which of the gas will not follow Henry's law?

HCl gas does not follow Henry's law because in solution HCl (g) dissociate into ions H+ and Cl-. HCl is a strong acid and it interact with solvent and readily dissociate into its constituent ions. While Helium, oxygen gas and hydrogen gas do not dissociate on interaction with water so they follow Henry's law.

What is concept of entropy?

Entropy, the measure of a system's thermal energy per unit temperature that is unavailable for doing useful work. Because work is obtained from ordered molecular motion, the amount of entropy is also a measure of the molecular disorder, or randomness, of a system.

Does Henry constant increase with temperature?


does not change much with temperature. Solubility of permanent gases usually decreases with increasing temperature at around room temperature. However, for aqueous solutions, the Henry's law solubility constant for many species goes through a minimum. For most permanent gases, the minimum is below 120 °C.

What is reversible and irreversible process?

Reversible and Irreversible Process. The reversible process is the ideal process which never occurs, while the irreversible process is the natural process that is commonly found in nature. This is an irreversible process. Whereas when water evaporates, it can also be condensed in the form of rains.

What is unit of inductance?

The henry (symbolized H) is the Standard International ( SI ) unit of inductance . Reduced to base SI units, one henry is the equivalent of one kilogram meter squared per second squared per ampere squared.