Embibe Experts Solutions for Chapter: Solutions, Exercise 4: EXERCISE-III (Analytical Questions)

The azeotropic mixture of water $\left(\mathrm{b}.\mathrm{p}.100°\mathrm{C}\right)$ and $\mathrm{HCl}\left(\mathrm{b}.\mathrm{p}.85°\mathrm{C}\right)$ boils at $108.5°\mathrm{C}$. When this mixture is distilled it is possible to obtain?

A $5\%$ solution of cane sugar is isotonic with $1\%$ solution of unknown solute. The molar mass of unknown solute in $\mathrm{g} {\mathrm{mol}}^{-1}$ is

The degree of dissociation of weak electrolyte ${\mathrm{A}}_{\mathrm{x}}{\mathrm{B}}_{\mathrm{y}}$ is related to van't Hoff factor $\left(\mathrm{i}\right)$ by the expression.

The relationship between the values of osmotic pressures of solutions obtained by dissolving $6.00 \mathrm{g} {\mathrm{L}}^{-1}$ of ${\mathrm{CH}}_3\mathrm{COOH}\left({\mathrm{\pi }}_1\right)$ and $7.45 \mathrm{g} {\mathrm{L}}^{-1}$ of $\mathrm{KCl}\left({\mathrm{\pi }}_2\right)$ is

Consider separate solution of $0.500 \mathrm{M} {\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}\left(\mathrm{aq}\right), 0.100 \mathrm{M} {\mathrm{Mg}}_3\left({\mathrm{PO}}_4{)}_2\right(\mathrm{aq}), 0.250 \mathrm{M} \mathrm{KBr}(\mathrm{aq})$ and $0.125 \mathrm{M} {\mathrm{Na}}_3{\mathrm{PO}}_4\left(\mathrm{aq}\right)$ at $25°\mathrm{C}$. Which statement is true about these solution, assuming all salts to be strong electrolytes ?

Assertion:- Ideal solutions are one which obeys Raoult's law at all temperature and concentration.

Reason: -Very dilute solution can be treated as ideal solution.

Assertion: - In positive deviation of non-ideal solution attraction between solute solvent is less than the attraction between solute-solute and solvent-solvent.

Reason:-In negative deviation of non-ideal solution attraction between solute-solvent is more than the attraction between solute-solute and solvent-solvent.

Assertion:- Isotonic solutions don't show net phenomenon of osmosis.

Reason:- Isotonic solutions have equal osmotic pressure at constant temp.