Please explain : what is Henry law . Also give any two of its applications ...
It's for 5 marks so give a detailed answer please
Answers
→ The law states that the mass of gas dissolved in a given volume of solvent at a constant temperature is directly proportional to the pressure of the gas.
Applications :
↪ : The sea divers carry compressed air cylinders with them for breathing . This consists of Nitrogen (N2) in addition to Oxygen (O2) . But the problem is that nitrogen is not soluble in our blood at normal pressure . It dissolves in blood only at a low pressure . So , when inhaled , the nitrogen gets mixed at lower depths . But when the divers come out for breathing , this Nitrogen comes out with a great pressure from the capillaries . This can burst or clog c the capillaries . This is termed as B.E.N.D.S .To avoid this , instead of Nitrogen Helium (He) is used because helium doesn't dissolve in blood even at low pressure . I'm addition , it's size is also the same as that of the blood cells so the capillaries aren't damaged in this case.
↪ : The people who live at high altitudes have a lower concentration of Oxygen in their blood . This reduces their power to think and makes them weak . This condition is termed as Amoxia.
↪ : Carbon dioxide ( CO2) is dissolved in beverages at a high pressure . So when the bottle is opened , there's a great efferverence . This continues till the pressure of the bottle becomes equal to the atmospheric pressure .