Embibe Experts Solutions for Chapter: Solutions, Exercise 4: Exercise-4

The phase diagrams for the pure solvent (solid lines) and the solution (non-volatile solute, dashed line) are recorded below: The quantity indicated by $\mathrm{L}$ in the figure is:

Three different ideal solutions (I, II, III) each containing total $10$ moles of $\mathrm{A} \& \mathrm{B}$ in different composition are taken as shown in figure and pressure over the solutions is gradually reduced.

Initially external pressure is same for all three solutions. At a particular external pressure $\left({\mathrm{P}}_1\right)$, ll solution is found to have

$\underset{(\mathrm{liq} \mathrm{composition})}{{\mathrm{X}}_{\mathrm{A}}=0.4 } \& \underset{(\mathrm{Vap}. \mathrm{composition})}{{\mathrm{Y}}_{\mathrm{A}}=0.8}$

Then select correct statement:

For ${\mathrm{K}}_{\mathrm{H}},$ Henry's constant, which are correct?

The vapour pressure of ideal solution of benzene and toluene is $550 \mathrm{torr}$ at $80°\mathrm{C}$ then what would be correct statement about same solution at $100°\mathrm{C}.$

Select incorrect statement:

$0.2$ moles of $\mathrm{A}$ and $0.3$ moles of $\mathrm{B}$ are taken in separate beakers and enclosed in chamber $\mathrm{I}.$ Another $0.2$ moles of $\mathrm{A}$ and $0.3$ moles of $\mathrm{B}$ are mixed in a beaker and enclosed in chamber$\mathrm{Il}.$ At equilibrium which of the following are not true. ($\mathrm{A}$ and $\mathrm{B}$ are volatile liquids and they form ideal solution on mixing) 

At $10°\mathrm{C}$ the osmotic pressure of urea solution is $500 \mathrm{mm}.$ The solution is diluted and the temperature is raised to $25°\mathrm{C},$ when the osmotic pressure is found to be $105.3 \mathrm{mm}.$ Determine extent of dilution. 

A solution containing $0.1 \mathrm{g}$ of a non volatile organic substance $\mathrm{P}$ (Molecular mass $100$ ) in $100 \mathrm{g}$ of benzene raises the boiling point of benzene by $0.2°\mathrm{C}$ while a solution containing $0.1 \mathrm{g}$ of another non-volatile substance $\mathrm{Q}$ in same amount of benzene raises the boiling point of benzene by $0.4°\mathrm{C}.$ If ratio of molecular masses of $\mathrm{P}$ and $\mathrm{Q}$ is $\frac{\mathrm{x}}{\mathrm{y}}$ then. Find minimum value of $\mathrm{x}+{\mathrm{y}}_{}.$