Chemistry - Ideal Gas Question with Solution | TestHub

The vapour pressure of a liquid depends on the external pressure as: $\mathrm{P}={\mathrm{P}}_0\cdot {\mathrm{e}}^{{\mathrm{V}}_{\mathrm{m},l}\cdot \Delta \mathrm{P}/\mathrm{RT}}$, where $\mathrm{P}=$ vapour pressure of liquid in presence of air, ${\mathrm{P}}_0=$ vapour pressure of liquid in absence of air, ${\mathrm{V}}_{\mathrm{m},\mathrm{l}}$ is the molar volume of liquid and $\Delta \mathrm{P}$ is the increase in pressure over the liquid. Calculate the vapour pressure of water (in mm Hg ) at $27^{\circ }\mathrm{C}$ and 100 atm pressure, if the vapour pressure of water in absence of air is 25 mm Hg at $27^{\circ }\mathrm{C}$. Molar volume of water $=18\mathrm{ml}/\mathrm{mol}$. ( $\ln 1.078=0.075$ )