91Ó°ÊÓ

Dilution processes of different aqueous solutions, with water, are given in LIST-I. The effects of dilution of the solutions on \(\left[\mathrm{H}^{+}\right]\) are given in LIST-II. (Note: Degree of dissociation \((\alpha)\) of weak acid and weak base is \(<<1\); degree of hydrolysis of salt \(\left\langle<1 ;\left[\mathrm{H}^{+}\right]\right.\) represents the concentration of \(\mathrm{H}^{+}\) ions \()\) LIST-I P. \((10 \mathrm{~mL}\) of \(0.1 \mathrm{M} \mathrm{NaOH}+20 \mathrm{~mL}\) of \(0.1 \mathrm{M}\) acetic acid) diluted to \(60 \mathrm{~mL}\) Q. \((20 \mathrm{~mL}\) of \(0.1 \mathrm{M} \mathrm{NaOH}+20 \mathrm{~mL}\) of \(0.1 \mathrm{M}\) acetic acid) diluted to \(80 \mathrm{~mL}\) R. \((20 \mathrm{~mL}\) of \(0.1 \mathrm{M} \mathrm{HCl}+20 \mathrm{~mL}\) of \(0.1 \mathrm{M}\) ammonia solution) diluted to \(80 \mathrm{~mL}\) S. \(10 \mathrm{~mL}\) saturated solution of \(\mathrm{Ni}(\mathrm{OH})_{2}\) in equilibrium with excess solid \(\mathrm{Ni}(\mathrm{OH})_{2}\) is diluted to \(20 \mathrm{~mL}\) (solid \(\mathrm{Ni}(\mathrm{OH})_{2}\) is still present after dilution). LIST-II 1\. the value of \(\left[\mathrm{H}^{+}\right]\) does not change on dilution 2\. the value of \(\left[\mathrm{H}^{+}\right]\) changes to half of its initial value on dilution 3\. the value of \(\left[\mathrm{H}^{+}\right]\) changes to two times of its initial value on dilution 4\. the value of \(\left[\mathrm{H}^{+}\right]\) changes to \(\frac{1}{\sqrt{2}}\) times of its initial value on dilution 5\. the value of \(\left[\mathrm{H}^{+}\right]\) changes to \(\sqrt{2}\) times of its initial value on dilution