12TH CBSE State Henry’s law correlating the pressure of a gas and its solubility in a solvent and mention two applications for the law.

 

Ans:
Henry’s law states that at a constant temperature, the solubility of a gas in a liquid is directly proportional to the pressure of the gas over the solution.
Applications:
1. To increase the solubility of CO in soft drinks and soda water, the bottle is sealed under high pressure.
2. Scuba divers must cope with high concentrations of dissolved Nitrogen with breathing air at high
pressure underwater. To avoid this air is diluted with He.
3. At high altitudes the partial pressure of oxygen is less than that at the ground level. Low blood oxygen causes anoxia.