State Henry's law nd mention some …

Henry’s law states that the solubility of a gas in a liquid is directly proportional to pressure of the gas; temperature constant.

Mathematically, P = K_H x

where
x=mole fraction of gas in solution
P is partial pressure of gas,
K_H is Henry's constant.

Applications:

(1) Henry's law finds various applications in industry and enables us to explain and understand some biological phenomena. The some of important applications are : CO₂ solubility in soft drinks, beverages, soda water etc. is increased by applying high pressure and bottles are sealed under high pressure.

(2) For deep divers, oxygen diluted with less soluble He gas is used as breathing gas and it minimises the painful effects due to higher solubility of N₂ gas in blood.

(3) In lungs, where oxygen is present in air with high partial pressure, haemoglobin combines with O₂ to form oxyhaemoglobin. In tissues where partial pressure of O₂ is low, oxyhaemoglobin releases the oxygen for utilisation in cellular activities.