What is osmol? Relation between osmol and mole.

Osmole:

• It is the amount in gram of osmotically active substance which in 1 L solution with water exerts
• Smotic pressure equal to 22.4 almospherc (22.4 x 760 mmHg) and depresses the freezing point
  of water by 1.86 'C.
• Osmotically active substance means any substance which can exert osmotic pressure in solution
  with water.
• For highly osmotically active substances, (e.g. Na*, glucose etc'), relatively small amount of
  them represent 1 osmole compared to osmotically less active substances, (e'g. protein)'
• It is used as the unit of measurement for osmotically active substances'

 

Relation between Osmole and Mole: