\(\therefore \,\,{\text{P}}_{{\text{solvent}}}^{\text{0}}\,\, - \,\,{P_{solution}}\, = \,\,2.5\)
\( \Rightarrow \,\,{P_{solution}}\, = \,\,100\,\, - \,\,2.5\,\, = \,\,97.5\,\,mm\)
\(\frac{{{P_0}\, - \,\,{P_S}}}{{{P_S}}}\,\, = \,\,\frac{n}{N}\,\, = \,\,\frac{{2.5}}{{97.5}}\,\, = \,\,\frac{{W\,\, \times \,\,18}}{{90\,\, \times \,97.5}}\)
$(i)$ $0.10\, {M} \,{Ba}_{3}\left({PO}_{4}\right)_{2}$
$(ii)$ $0.10\, {M}\, {Na}_{2} {SO}_{4}$
$(iii)$ $0.10\, {M}\, {KCl}$
$(iv)$ $0.10 \,{M} \,{Li}_{3} {PO}_{4}$
(યુરિયાનો અણુભાર $= 60\, g\, mol^{-1}$)
$(R = 0.083 \,L\, bar \,mol^{-1}\, K{-1})$