State Henrys law and mention some important applications?
According to Henry's law, the solubility of gas in a liquid is directly proportional to the pressure of the gas.
X = Kh × P
X is the mole fraction of gas, Kh is the Henry's law constant and P is the partial pressure of the gas.
Important applications:
(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 see diving: Nitrogen is more soluble than Helium in our blood. In the deep see, the pressure is higher than at the surface of water. When diver tries to come rapidly towards the surface of water, pressure decreases and dissolved nitrogen comes back from blood and makes bubbles in veins. Hence, divers use oxygen diluted with helium.