Chemistry - Liquid Solution Question with Solution | TestHub

Paragraph:Properties such as boiling point, freezing point and vapour pressure of a pure solvent change when solute molecules are added to get homogeneous solution. These are called colligative properties. Applications of colligative properties are very useful in day-to-day life. One of its examples is the use of ethylene glycol and water mixture as anti-freezing liquid in the radiator automobiles. A solution $M$ is prepared by mixing ethanol and water. The mole fraction of ethanol in the mixtrue is $0.9$ Given Freezing point depression constant of water $\left(k^{\text{water }}\right)=1.86\mathrm{K}\mathrm{kg}{\mathrm{mol}}^{-1}$ Freezing point depression constant of ethanol $\left(k_f^{\text{ethanol }}\right)=2.0\mathrm{Kkg}{\mathrm{mol}}^{-1}$ Boiling point elevation constant of water $\left(k_b^{\text{water }}\right)=0.52\mathrm{Kkg}{\mathrm{mol}}^{-1}$ Boiling point elevation constant of ethanol $\left(k_b^{\text{ethanol }}\right)=1.2\mathrm{Kkg}{\mathrm{mol}}^{-1}$ Standard freezing point of water $=273\mathrm{K}$ Standard freezing point of ethanol $=155.7\mathrm{K}$ Standard boiling point of water $=373\mathrm{K}$ Standard boiling point of ethanol $=351.5\mathrm{K}$ Vapour pressure of pure water $=328\mathrm{mm}$ of $\mathrm{Hg}$ Vapour pressure of pure ethanol $=40\mathrm{mm}$ of $\mathrm{Hg}$ Molecular weight of water $=18\mathrm{g}{\mathrm{mol}}^{-1}$ Molecular weight of ethanol $=46\mathrm{g}{\mathrm{mol}}^{-1}$ In answering the following questions, consider the solutions to be ideal dilute solutions and solutes to be non-volatile and non-dissociative.