Chemistry - Liquid Solution Question with Solution | TestHub

The elevation in boiling point of a solution of a solution$\mathrm{d}{\mathrm{T}}_{\mathrm{b}}$is related with molality of solution (m) by the relation
$\mathrm{d}{\mathrm{T}}_{\mathrm{b}}=\left[\frac{\mathrm{R}{\mathrm{T}}_{\mathrm{b}}^2}{\mathrm{\Delta }{\mathrm{{\rm H}}}_{\mathrm{v}\mathrm{a}\mathrm{p}}}\right]\left[\frac{{\mathrm{M}}_1}{1+\mathrm{m}{\mathrm{M}}_1}\right],$where${\mathrm{M}}_1$is molar mass of solvent and$∆{\mathrm{H}}_{\mathrm{v}\mathrm{a}\mathrm{p}}$is heat of vaporization of solvent. For a dilute solution, the relation${\left(\frac{\partial {\mathrm{T}}_{\mathrm{b}}}{\partial \mathrm{m}}\right)}_{\mathrm{m}\to 0}$gives: