Dilution process of different aqueous solutions; with water, are given in LIST-I. The effects of dilution of the solutions on [H+] are given in LIST-II.
(Note : Degree of dissociation (α) of weak acid and weak base is << 1; degree of hydrolysis of salt <<1; [H+] represents the concentration of H+ ions)
LIST-I |
List-II |
P. (10 mL of 0.1 M NaOH+ 20 mL of 0.1 M acetic acid) diluted to 60 mL |
1. the vale of [H+] does not change on dilution |
Q. (20 mL of 0.1 M NaOH + 20 mL of 0.1 M acetic acid) diluted to 80 mL |
2. the value of [H+] change to half of its initial value on dilution |
R. (20 mL of 0.1 M HCl + 20 mL of 0.1 M ammonia solution) diluted to 80 mL |
3. the value of [H+] changes to two times of its initial value on dilution |
S. 10 mL saturated solution of Ni(OH)2 in equilibrium with excess solid Ni(OH)2 is diluted to 20 mL (solid Ni(OH)2 is still present after dilution). |
4. the value of [H+] changes to 1/√2 times |
|
5. the value of [H+] changes to √2 times of its initial value on dilution |
Match each process given in LIST-I with one or more effect(s) in LIST-II. The correct option is