What is the effect of pressure on solubility of gases? Explain with an example.
What is the effect of pressure on solubility of gases? Explain with an example.
The solubility of gases in liquids is greatly affected by pressure. It is directly proportional to pressure i.e. increasing pressure increases solubility of the gas in water.
The relationship between solubility of gas and pressure was given by Henry in the form of Henry's law which is stated as follows:-
"The partial pressure of the gas in the vapour phase is proportional to a mole fraction of the gas in the solution"
The best example of this is carbonated beverages such as club soda, Coka Cola, etc. The carbon dioxide gas is bubbled into the liquid coke under pressure. As long as the pressure above the liquid is maintained, most of the gas will remain in solution. When the cap is screwed off (or pressure is released in some other manner) the gas begins to escape hence the hiss when a Coke is opened.
The solubility of gases in liquids is greatly affected by pressure. It is directly proportional to pressure i.e. increasing pressure increases solubility of the gas in water.
The relationship between solubility of gas and pressure was given by Henry in the form of Henry's law which is stated as follows:-
"The partial pressure of the gas in the vapour phase is proportional to a mole fraction of the gas in the solution"
The best example of this is carbonated beverages such as club soda, Coka Cola, etc. The carbon dioxide gas is bubbled into the liquid coke under pressure. As long as the pressure above the liquid is maintained, most of the gas will remain in solution. When the cap is screwed off (or pressure is released in some other manner) the gas begins to escape hence the hiss when a Coke is opened.
