Seema Saini Solutions for Chapter: Solutions, Exercise 6: DPP 2.6

At $5.3 °\mathrm{C}$, pure benzene freezes. $0.223 \mathrm{g}$ of phenylacetic acid solution$\left({\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{CH}}_2\mathrm{COOH}\right)$ in $4.4 \mathrm{g}$ of benzene $({\mathrm{K}}_{\mathrm{f}}=5.12 \mathrm{K} \mathrm{kg} {\mathrm{mol}}^{-1})$ freezes at $4.47 °\mathrm{C}$. From the observation, one can conclude that:

Vapor density of ${\mathrm{PCl}}_5 \left(\mathrm{g}\right)$ dissociating into ${\mathrm{PCl}}_3 \left(\mathrm{g}\right)$ and ${\mathrm{Cl}}_2 \left(\mathrm{g}\right)$ is $100.$ Hence, van't Hoff factor for the case ${\mathrm{PCl}}_5 \left(\mathrm{g}\right)\leftrightharpoons {\mathrm{PCl}}_3 \left(\mathrm{g}\right)+{\mathrm{Cl}}_2 \left(\mathrm{g}\right)$ is

We have three aqueous solution of $\mathrm{NaCl}$ labeled as $\text{'}\mathrm{A}\text{'}, \text{'}\mathrm{B}\text{'}$ and $\text{'}\mathrm{C}\text{'}$ with concentration $0.1 \mathrm{M}, 0.01 \mathrm{M}$ and $0.001 \mathrm{M}$ respectively. The value of van't Hoff's factor for these solutions will be in the order

A compound ${\mathrm{MX}}_2$ has observed and normal molar masses $65.6$ and $164$ respectively. Calculate the apparent degree of ionization of ${\mathrm{MX}}_2$.

Which of the following statements are correct?

Consider $0.1 \mathrm{M}$ solutions of two solutes $\mathrm{X}$ and $\mathrm{Y}$. The solute $\mathrm{X}$behaves uni-univalent strong electrolyte while the solute $\mathrm{Y}$dimerises completely in solution. Which of the following statements are correct regarding these solutions?

For a $0.1 \mathrm{m}$ solution, each of two solutes $\mathrm{X}$ and $\mathrm{Y}$ in which solute $\mathrm{X}$behaves as a uni-univalent strong electrolyte and $\mathrm{Y}$ dimerises in solution. The correct statement(s) are:

$2$litre of $1 \mathrm{M}$ solution of a complex salt ${\mathrm{CrCl}}_3·6{\mathrm{H}}_2\mathrm{O}$ (molar mass $266.5 \mathrm{g} {\mathrm{mol}}^{-1}$) shows an osmotic pressure of $98.52 \mathrm{atm}$ at $27°\mathrm{C}$. The solution is now treated with $1 \mathrm{litre}$ of $6 \mathrm{M}$ ${\mathrm{AgNO}}_3$. Which of the following options are correct?