State Henry's law and mention some important applications.

Explanation

Henry.s law : The solubility of the amount of a gas in a liquid is directly proportional to the pressure of gas.
Applications of Henry.s law :
(i) Deep sea divers use He and `O_2` mixture for respiration in place of `N_2` and `O_2` because `N_2` being more soluble in blood at high pressure and creates the painful effect on the human body.
(ii) To make soft drink bottles rich in `CO_2`, sealing of the bottle is done at high pressure.