52 K at
one atmospheric pressure Let 
b0
T  be the boiling point of pure solvent and
b
T  be the boiling point of solution The increase in
the boiling point 
0
b
b
b



T
T
T  is known as
elevation of boiling point Experiments have shown that for dilute
solutions the elevation of boiling point (DTb) is
directly proportional to the molal concentration of
the solute in a solution