ISOTONIC SOLUTIONS

 

Isotonic Solutions:

• Isotonic - having the same osmotic pressure as body fluids

• Hypotonic - osmotic pressure is lower than in the body fluids

• Hypertonic - osmotic pressure is higher than in the body fluids

Preparation of Isotonic Solutions:

-     Blood's freezing point is ca. - 0.52oC
-   One-gram mass (M) of no solution decreases temperature by ca. 1.86oC

Example:
What quantity of boric acid is required to arrange isotonic solution?

         1.86(oC)                   61.8(g) /1000(ml)                                                                                             
=  ---------------      =    ---------------------------                                                                                  
         0.52(oC)                    x(g) / 1000(ml)