Lands Berger’s method of determining boiling point elevation constant  of a solvent

Lands Berger’s method of determining boiling point elevation constant  of a solvent

1. The solvent of boiling point, T₀, is boiled in a separate flask and used to boil the solution.
2. Excess vapor escapes through the hole E.
3. The boiling point of the solution T₁⁰C is obtained from the thermometer.
4. The final volume of the liquid in the graduated tube is read off and from the density of the solvent the mass (m_s g) of the solvent into which a solute of mass m₂ is dissolved is calculated.

Then the boiling point constant Kb is given by

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