K L Chugh Solutions for Chapter: Solutions, Exercise 4: Follow Up Problems

An aqueous solution of glucose is made by dissolving $10 \mathrm{g}$ of glucose $\left({\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6\right)$ in $90 \mathrm{g}$ of water at $303 \mathrm{K}$ If the vapour pressure of pure water at $303 \mathrm{K}$ be $32.8 \mathrm{mm} \mathrm{Hg},$ what would be the vapour pressure of the solution?

The vapour pressure of pure benzene at a certain temperature is $0.850 \mathrm{bar}.$ A non-volatile, non-electrolyte solid weighing $0.5 \mathrm{g}$ is added to $39.0 \mathrm{g}$ of benzene (molar mass $78 \mathrm{g}{ \mathrm{mol}}^{-1}$). The vapour pressure of the solution then is $0.845 \mathrm{bar}.$ What is the molecular mass of the solid substance?

What mass of non-volatile solute, sucrose, need to be dissolved in $100 \mathrm{g}$ of water to decrease the vapour pressure of water by $30\%?$

A solution is made by dissolving $1.0 \mathrm{g}$ urea and $2.0 \mathrm{g}$ sucrose in $100 \mathrm{g}$ water at $298 \mathrm{K},$ predict the vapour pressure of solution if the vapour pressure of water at $298 \mathrm{K}$ is $23.756$ torr.