Properties of Solutions

Proprieties of Solutions ?

Objective Learning :Identify a mixture as a solution, a colloid, or a suspension. Describe how the number of particles in a solution affects the osmotic pressure of a solution .

• Colloids contain particles that pass through most filters but do not settle out or pass through permeable membranes.

• Suspensions have very large particles that settle out of solution.

• In osmosis, solvent 1water2 passes through a selectively permeable membrane from a solution with a lower solute
concentration to a solution with a higher concentration.

• Isotonic solutions have osmotic pressures equal to that of body fluids.

• A red blood cell maintains its volume in an isotonic solution but swells in a hypotonic solution, and shrinks in a hypertonic solution.

• In dialysis, water and small solute particles pass through a dialyzing membrane, while larger particles are retained.

Hemodialysis : A mechanical cleansing of the blood by an artificial kidney using the principle of dialysis.
Hemolysis: A swelling and bursting of red blood cells in a hypotonic solution because of an increase in fluid volume.