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 value 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 mL 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 diluation). | 4. the value of [H+] changes to 1√2 times of its initial value on dilution |
5. the value of [H+] changes to √2 times of its initial value on dilution |