Embibe Experts Solutions for Chapter: Solutions, Exercise 5: EXERCISE-IV (Assertion & Reason)

Assertion:- On mixing aniline and Acetone shows $+\mathrm{ve}$ deviation.

Reason: - Interaction between Acetone and aniline is weaker than interaction of Acetone-Acetone and aniline-aniline.

Assertion:- When two volatile liquids are mixed then vapour pressure of one increases and other decreases.

Reason:- Vapour pressure of solution decreases.

Assertion:- At high altitude cooking food is difficult.
Reason:- Water boils at high temprature.

Assertion:- After adding non-volatile solute freezing point of solvent depressed.

Reason:- Vapour pressure of solvent decreases and become equal to solid solvent, at temprature lower than the freezing point of pure solvent.

Assertion: On increasing pressure solubility of gases in liquid solvent increases.

Reason: Dissolution of gases in liquid is exothermic.

Molar conductances of ${\mathrm{BaCl}}_2, {\mathrm{H}}_2{\mathrm{SO}}_4$ and $\mathrm{HCl}$ at infinite dilutions are ${\mathrm{x}}_1, {\mathrm{x}}_2$ and ${\mathrm{x}}_3$, respectively. Equivalent conductance of ${\mathrm{BaSO}}_4$ at infinite dilution will be:

The ionisation constant of a weak acid electrolyte is $25\times {10}^{-6}$, while the equivalent conductance of its $0.01 \mathrm{M}$ solution is $19.6 \mathrm{S} {\mathrm{cm}}^2 {\mathrm{eq}}^{-1}$. The equivalent conductance of the electrolyte at infinite dilution (in $\mathrm{S} {\mathrm{cm}}^2 {\mathrm{eq}}^{-1}$) will be:

Which has maximum conductivity: