Define osmotic pressure ? How is the osmotic pressure related to the concentration of a solute in a solution?

What is Osmotic pressure ?

How is osmotic pressure related to molecular weight of solute?

The osmotic pressure of a solution increases if,

The osmotic pressure of glucose at 27^@C is 2.5 atm, the concentration of glucose solution is

Osmotic pressure of sugar solution at 24^@C is 2.5 atm . The concentration of the solution in gm / litre is :

Define 'osmosis' and 'osmotic pressure'. Show that osmotic pressure is a colligative property. A 4% solution of sucrose (C_12 H_22 O_11) is isotonic with 3% solution of an unknown organic substance. Calculate the molecular mass of the unknown substance.