S C Kheterpal, S N Dhawan and, P N Kapil Solutions for Chapter: Ionic Equilibrium in Solution, Exercise 41: TEST YOUR GRIP

Which of the following will occur if a $0.1 \mathrm{M}$ solution of a weak acid is diluted to $0.01 \mathrm{M}$ at constant temperature?

If $\mathrm{c}$ is the molar concentration of the solution of a weak electrolyte, then its degree of dissociation is inversely proportional to _____ (square/cube) root of molar concentration.

If ${\text{K}}_{{\mathrm{a}}_1}$ and ${\text{K}}_{{\mathrm{a}}_2}$ are the dissociation constants of two acids ${\text{HA}}_1$ and ${\text{HA}}_2$, then the ratio of strengths of their solutions with equimolar concentration is _____ .

$\mathrm{A}:\sqrt{\frac{{\mathrm{K}}_{\mathrm{a}2}}{{\mathrm{K}}_{\mathrm{a}1}}} \mathrm{B}:\sqrt{{\mathrm{K}}_{\mathrm{a}1}\times {\mathrm{K}}_{\mathrm{a}2}} \mathrm{C}:\sqrt{\frac{{\mathrm{K}}_{\mathrm{a}1}}{{\mathrm{K}}_{\mathrm{a}2}}}$(Enter your correct answer as $\mathrm{A}, \mathrm{B} \mathrm{or} \mathrm{C}$)

If ${\text{K}}_1$ is ionization constant of ${\text{H}}_2\text{S}\left(\mathrm{aq}\right)\rightleftharpoons 2{\text{H}}^{+}\left(\mathrm{aq}\right)+{\text{S}}^{2-}\left(\mathrm{aq}\right)$ and ${\text{K}}_2$ is that for ${\text{H}}_2\text{S}\left(\mathrm{aq}\right)\rightleftharpoons {\text{H}}^{+}\left(\mathrm{aq}\right)+{\text{HS}}^{-}\left(\mathrm{aq}\right)$, then ionization constant of ${\text{HS}}^{-}\left(\mathrm{aq}\right)\rightleftharpoons {\text{H}}^{+}\left(\mathrm{aq}\right)+{\text{S}}^{2-}\left(\mathrm{aq}\right)$ will be equal to _____.

(A) $\frac{{\mathrm{K}}_1}{{\mathrm{K}}_2}$

(B) $\frac{{\mathrm{K}}_2}{{\mathrm{K}}_1}$

(C) $\frac{{\mathrm{K}}_1}{\left[{\mathrm{S}}^{2-}\right]}$

Enter the correct answer as A, B or C.

Ionic product of water _____ with increase of temperature.

The relation between $\mathrm{p}\text{H}, \mathrm{p}{\text{K}}_{\mathrm{a}}$ and concentration $\mathrm{c}$ of the solution of a weak acid is?

$\mathrm{pH}$, ionization constant ${\mathrm{K}}_{\mathrm{a}}$ and concentration $\mathrm{c}$ of the solution of the salt of a weak acid and strong base (like ${\mathrm{CH}}_3\mathrm{COONa}$) are related as?

The solubility of $\mathrm{AgCl}$ in water is _____ (less/more) than that in $\mathrm{NaCl}$ solution.