$\,{C_1}\,\, = \,\,\frac{{36}}{{180\,\, \times \,\,1}}$

$\left( {\because \,\,C\,\, = \,\,\frac{w}{{m\,\, \times \,\,V}}} \right)\,\,\,{C_2}\,\, = \,\,?$

$\pi_1V_1 = n_1S_1T_1$  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  $\frac{{4.92}}{{1.5}}\,\, = \,\,\frac{{36}}{{180\,\, \times \,\,{C_2}}}$

$\therefore \,\,{C_2}\,\, = \,\,0.061\,\,mol/litre$