Ans this ques
Dear Student
(i) Aqueous solution of Ammonia gives us and OH- as shown below
now since the solution contains OH- so it is basic in nature ( By definition of Base) Hence it turns red litmus blue.
(ii) Strong base is one which produce large no of hydroxides ions in the solution but in case of aqueous ammonia , Ammonia donates lone pair of electron to water which leads to only few amount of hydroxide ions ( Partial dissociation) so it is a weak base and now since it doesn't produce enough no of hydroxide ions which indicates partial dissociation so it is termed as weak electrolyte ( As weak electrolyte ionises partly in aqueous solution) .
Regards
(i) Aqueous solution of Ammonia gives us and OH- as shown below
now since the solution contains OH- so it is basic in nature ( By definition of Base) Hence it turns red litmus blue.
(ii) Strong base is one which produce large no of hydroxides ions in the solution but in case of aqueous ammonia , Ammonia donates lone pair of electron to water which leads to only few amount of hydroxide ions ( Partial dissociation) so it is a weak base and now since it doesn't produce enough no of hydroxide ions which indicates partial dissociation so it is termed as weak electrolyte ( As weak electrolyte ionises partly in aqueous solution) .
Regards