(i) In production of carbonated beverages.
Under high pressure, solubility of CO2 increases. On opening the bottle to atmospheric pressure solubility decreases and the gas bubbles out.
(ii) In deep sea diving.
Compressed air cylinder is used to get more oxygen in the blood but dissolved nitrogen causes a disease called decompression sickness. Hence, air diluted with helium is used.
(iii) In the function of lungs.
In the lungs, partial pressure of O2 is high. It combines with haemoglobin to from oxyhaemoglobin. In the tissues, partial pressure of O2 is low. Therefore, O2 is released from oxyhaemoglobin for functions of the cell.
(iv) For climbers or people living at high altitude.
Concentration of O2 in the blood and tissues is so low that they feel weak and are unable to think properly, a disease called anoxia.
