(2.5 ~g of a non-volatile, non-electrolyte is dissolved in (100 ~g...

(2.5 $\mathrm{~g}$ of a non-volatile, non-electrolyte is dissolved in (100 $\mathrm{~g} of$water at (25^{{}^{\circ}}$\mathrm{C}. The$solution showed a boiling point elevation by (2^{{}^{\circ}}$\mathrm{C}. Assuming the$solute concentration is negligible with respect to the solvent concentration, the vapor pressure of the resulting aqueous solution is (\qquad) ($\mathrm{mm}$ of ($\mathrm{Hg}$ (nearest integer) [Given : Molal boiling point elevation constant of water ($\left(\mathrm{K}_{\mathrm{b}}\right)=$0.52 $\mathrm{~K} . \mathrm{kg} \mathrm{mol}^{-1}$, (1 $\mathrm{~atm}$ pressure (=760 $\mathrm{~mm}$ of ($\mathrm{Hg}$, molar mass of water (=18 $\mathrm{~g} \mathrm{~mol}^{-1}$]