\(\frac{17.5-P_{S}}{P_{S}}=\frac{18 / 180}{178.2 / 18}\)
as \(P^o=17.5\)
\(17.5-P_{S}=\frac{0.1 \times P_{S}}{9.9}\)
\(P_{S}=17.325\, \mathrm{mm} \mathrm{Hg}\)
$\left[\right.$ આપેલ છે $\left.: {K}_{{f}}\left({H}_{2} {O}\right)=1.86\, {~K}\, {~kg}\, {~mol}^{-1}\right]$