Show that osmotic pressure is a colligative property?

What is Van't Hoff factor? What possible values can it have if the solute molecules undergo association. Prove that osmotic pressure is a colligative property?

What is Van't Hoff factor? What possible values can it have if the solute molecules undergo dissociation in solution. Prove that osmotic pressure is a colligative property?

van't Hoff proved that osmotic pressure ( pi ) is a colligative property. For an ideal solution, osmotic pressure( pi ) is helpful to determine that molecular mass of solute using M_(B)=(W_(B)RT)/(pi.V) Relation can exxpressed by the curve (C = concentration) :

Each question contains STATEMENT-I(Assertion) and STATEMENT-2(Reason).the statement carefully and mark the correct answer accoring to the instrution given below: STATEMENT - 1 : Osmotic pressure is a colligative property. STATEMENT - 2 : Osmotic pressure is developed in a column due to osmosis.

Define first colligative property?

Show that relative lowering in vapour pressure is a colligative property