Principle

The boiling point of a solution is always higher than that of
the pure solvent. The dependence of the temperature difference
(elevated boiling point) on the concentration of the solute can be
determined using a suitable apparatus.

Benefits


Simple presentation and execution by temperature meter 4-2

Simultaneous display of current temperature and temperature difference

Compact, easily transportable setup



Tasks


Measure the increase in the boiling point of water as a
function of the concentration of table salt, urea and
hydroquinone.

Investigate the relationship between the increase in boiling
point and the number of pellets.

Determine the molar mass of the solute from the relationship
between the increase in boiling point and the concentration.


What you can learn about


Raoult’s law

Henry’s law

Ebullioscopic constants

Chemical potential

Gibbs-Helmholtz equation

Concentration ratio

Degree of dissociation


Necessary accessories


Precision balance 620g/0.001g