Chemistry

Colligative properties

Properties that depends on the concentration of solute particles but not on their identity are called

Molar freezing point constant k

Is the freezing point depression of the solvent in a 1-molal solution of nonvolatile,non electrolyte solute

Freezing point depression

Is the difference between the freezing points of the pure solvent and a solution of a nonelectrolytes in that solvent,and it is directly proportional to the molal concentration of the solution

Molal boiling point constant “kb”

Is the boiling point elevation of the solvent in a 1 molal solution of a nonvolatile nonelectrolyte solute

Boiling point elevation “tb”

Is the difference between the boiling points of the pure solvent and nonelectrolyte solution of that solvent and it is directly proportional to the molal concentration of the solution

Semipermeable membrane

Allows the passage of some particles while blocking the passage of others

Osmosis

The movement of solvent through a semipermanent membrane from the side of lower solute concentration to the side of higher solute concentration

Osmotic pressure

Is the external pressure that must be applied to stop osmosis