${\text{50 }}\, \times {\text{ 36 = }}{{\text{N}}_{\text{2}}}\,\, \times {\text{ 100}}$
$ \Rightarrow {\text{ }}{{\text{N}}_{\text{2}}}{\text{ = 18}}$
$\because \,\,{\text{M}}\,\, \times \,\,{\text{n}}\,\, = \,\,{\text{N}}\,\, \Rightarrow \,\,{\text{M}}\,\, = \,\,\frac{{\text{N}}}{{\text{n}}}\,\, = \,\,\frac{{18}}{2}\,\, = \,\,9$
(પાણી માટે $K_f = 1.86\,^oC\, kg\, mol^{-1}$ છે)
(મોલર દળ $S = 32\, g\, mol^{-1}, Na = 23\, g\, mol^{-1}$ )
(અણુભાર : $CHCl_3 = 119.5\, u, CH_2CI_2 = 85\,u$)