SOLUBILITY OF A GAS IN A LIQUID

why HCl is highly soluble in water

• Hydrogen is polar molecular molecule that interacts strongly with polar water through dipole-dipole forces.

• Unlike oxygen it reacts with chemically with water which undergoes complete ionization.

Solubility of gases in the liquid is greatly affected by …………….

• Temperature

• pressure

when pressure is increased what happens to gases on the solution

• pressure will increase : the number of gases particle pre unit area on the over the solution

• the rate at which gases particle are striking the surface of solution to enter it will also increase

The henry’s law is what type of relation

The henry was the first person to give a quantitative relation between solubility of gas and in a solvent and pressure

State henry’s law

The partial pressure of the gas on vapour phase is proportional to the mole fraction if the gas in the solution

what is the K_H

It is the henry’s contstant which depends on the nature of gas and the temperature and pressure

solubility of a gas or solid is only determined

saturated solution

The solubility of a component can be expressed in concentration terms like …………….

• Mole fraction

• molarity

• molality

• mass %

• volume %

• mass volume %

• parts per million

The graph of mole fraction of a gas and the partial pressure of gas is ………….

A straight line

do every gas has same K_H value

No the the henry’s constant differs for every gas because the constant depends on the nature of a gas and every gas has different nature

in open container if the temperature increases what happens to the mole fraction

If you are in an open container (like a beaker), and you increase the temperature:

• K_H goes up.

• p stays the same (because the atmosphere doesn't care about your beaker).

• Therefore, x must go down. There is no "pressure increase" to save the solubility.

List all the relations

• solubility directly proportional to pressure

• solubility inversely proportional to temperature

• solubility inversely proportional to henry’s constant

• temperature is directly proportional to henry’s constant

Application of Henry’s law in industry

1. To increase the solubility of CO₂ in the soft drinks and soda water , the bottle is sealed in a high pressure

biological phenomena of henry’s law