Boiling Point

boiling point elevation

delta Tb, is directly proportional to the molar concentration of solute species: delta Tb = Kbm Kb is the boiling point elevation constant, and m is the molality of all solute species.

normal boiling point

of a liquid is defined as its boiling point when surrounding pressure is equal to 1 atm(101.3kPa)

boiling point

of a liquid is the temp at which its equilibrium vapor pressure is equal to the pressure exerted on the liquid by its gaseous surroundings.

calculating boiling point elevation

Molality of solution --> 1. change in boiling point --> 2. new boiling point. what is the boiling point of a .33m solution of a nonvolatile solute in benzene? Step 1: calculate the change in boiling point. delta Tb= Kbm= 2.53 Cm-1 x .33m = .83 C Step 2: add the boiling point elevation to the pure solvent's boiling point. boiling temp=80.1 C + .83 C = 80.9 C