Question

Observation on addition of one drop of 6 M Naoh to Mg(No3)2 solution

Effect on solubility of Mg(OH)2

Of added HCl solution

Of added NaOH solution

Of added Nh3 Solution

Answer 1

Mg(OH)2    solubility will increase by addition of HCl. as we know Mg(OH)2 is base the OH^- from Mg(OH)2   will reacts with HCl we added. to increase the hydroxide ions solubility of Mg(OH)2 will increase.

by adding NaOH solubility will decrease as we know solution already contain OH ions from Mg(OH)2 if we add more OH ions from ions they supress the solubility if Mg(OH)2 in the solution.

NH3 will not effect the solubility of Mg(OH)2 in the solution.