Elevation of Boiling Point Formula
Boiling Point:
For any liquid boiling point is the temperature at which Vapour pressure of liquid is equal to the atmospheric pressure (1atm).
Elevation of Boiling Point
The difference between boiling point of solution and boiling point of solvent.
It is denoted by ∆Tb.
Formula
∆Tb = Tb – Tb°
∆Tb= Elevation of boiling point
Tb = boiling point of solution
Tb° = boiling point of pure solvent
The elevation of boiling point is directly proportional to the Molal or molality (m).
∆Tb α m
∆Tb= Kb.m……………(1)
Kb = Molal elevation constant or ebullioscopic constant is the boiling elevation constant produced by one molal solution.
Where m = molality