M K Verma Solutions for Chapter: Solutions, Exercise 1: TOPICWISE QUESTIONS

Vapour pressure of a highly dilute solution of a sparingly soluble salt $\mathrm{AB}$ is $20 \mathrm{mm}$ of $\mathrm{Hg}$ at temperature $\mathrm{T},$ while pure water exerts a pressure of $20.005 \mathrm{mm}$ $\mathrm{Hg}$ at the same temperature. The solubility product constant of $\mathrm{AB}$ at the same temperature is approximately:

The osmotic pressure of naphthalene solution at $27°\mathrm{C}$ is $500 \mathrm{mm}.$ When the solution is diluted and the temperature is raised to $47°\mathrm{C},$ the osmotic pressure of the solution becomes $105 \mathrm{mm}.$ The extent of dilution approximately is

$0.1 \mathrm{M} \mathrm{NaCl} \left(\mathrm{aq}.\right)$ and $0.2 \mathrm{M} {\mathrm{AgNO}}_{3 }\left(\mathrm{aq}.\right)$ solutions are mixed in $3:1$ volume ratio. The freezing point of the resulting solution is

How many grams of sucrose $\left(\mathrm{Molecular} \mathrm{weight}\right.$ $= 342)$ should be dissolved in $100 \mathrm{g}$ water in order to produce a solution with a $105°\mathrm{C}$ difference between the freezing point and boiling temperatures?

$\left({\mathrm{K}}_{\mathrm{f}}=1.86°\mathrm{C} \mathrm{kg}/\mathrm{mol}, {\mathrm{K}}_{\mathrm{b}}=0.51°\mathrm{C} \mathrm{kg}/\mathrm{mol}\right)$

$\mathrm{pH}$ of a $0.1 \mathrm{M}$ monobasic acid is found to be $2.$ Hence, its osmotic pressure at a given at temperature $\mathrm{T} \mathrm{K}$ is:

The osmotic pressure of blood is $7.65 \mathrm{atm}$ at $310 \mathrm{K}.$ An aqueous solution of glucose that will be isotonic with blood is ....... $\raisebox{1ex}{$\mathrm{w}$}\!\left/ \!\raisebox{-1ex}{$\mathrm{V}$}\right.$.

$\left(\mathrm{C}=12 \mathrm{u}, \mathrm{H}=1 \mathrm{u}, \mathrm{O}=16 \mathrm{u}\right)$

The amount of ice that will separate on cooling a solution containing $50 \mathrm{g}$ of ethylene glycol In $200 \mathrm{g}$ water to $- 9.3° \mathrm{C}$ is: $\left({\mathrm{K}}_{\mathrm{f}}=1.86 \mathrm{K} {\mathrm{molal}}^{-1}\right)$

$2.56 \mathrm{g}$ of sulphur in $100 \mathrm{g}$ of ${\mathrm{CS}}_2$ has depression in freezing point $0.010°\mathrm{C}, {\mathrm{K}}_{\mathrm{f}}=0.1°\mathrm{C} {\mathrm{molal}}^{-1}.$  Hence, atomicity of sulphur in ${\mathrm{CS}}_2$ is