\(\,{C_1}\,\, = \,\,\frac{{36}}{{180\,\, \times \,\,1}}\)
\(\left( {\because \,\,C\,\, = \,\,\frac{w}{{m\,\, \times \,\,V}}} \right)\,\,\,{C_2}\,\, = \,\,?\)
\(\pi_1V_1 = n_1S_1T_1\) અને \(\pi_2V_2 = n_2ST_2\) સમાન તાપમાનેે,
\(\frac{{{\pi _1}}}{{{\pi _2}}}\,\, = \,\,\frac{{{n_1}}}{{{n_2}}}\,\, \times \,\,\frac{{{V_2}}}{{{V_1}}}\,\, = \,\,\frac{{{C_1}}}{{{C_2}}}\) અથવા \(\frac{{4.92}}{{1.5}}\,\, = \,\,\frac{{36}}{{180\,\, \times \,\,{C_2}}}\)
\(\therefore \,\,{C_2}\,\, = \,\,0.061\,\,mol/litre\)
(પાણી માટે $K_f=1.86\, K\, kg, mol^{-1}$ અને ઇથિલીન ગ્લાયકોલનું આણ્વિય દળ $= 62\, g\, mol^{-1}).$