Elevation of boiling point

Elevation of boiling point

1. Elevation of Boiling point Designed by: M. Abdul Manan M.Faheem Abbas

2. Elevation of Boiling Point(2 nd Colligative property) Colligative Property: Colligative properties of solutions are properties that depend upon the concentration of solute molecules or ions, but not upon the identity of the solute. Colligative properties include vapor pressure lowering, boiling point elevation, freezing point depression, and osmotic pressure.

3. Elevation of Boiling Point Boiling point: The constant temp. at which thee vapor pressure of liquid becomes equal to the atmospheric pressure. Boiling point of water : 100C

4. Elevation of boiling point Elevation of boiling point: The boiling point of solvent elevate from its original boiling point, when we add a non volatile solute in it. For example: If we add Wb amount of solute in Wa amount of solution, the boilng point increase to some extent from its original boiling point.

5. Elevation of Boiling point For example: Tb = T(solution) – T(solvent)

6. Elevation of boiling point ΔT b  =  K b  ·  m where ΔT b  is the boiling point elevation K b is the ebullioscopic constant, which depends on the solvent m   is the molality of the solution (typically found in a table)

7. Determination of molar mass of solute. Molality : the number of moles of solute dissolve in a given mass of the solvent expressed in Kg

8. Determination b b b b b b b Boiling point Boiling point b

9. Any question Elevation of boiling point

10. Elevation of boiling point Thank you