1.

Why AI(HO)_(3) is insoluble in excess of NH_(4)OH but soluble in NaOH?

Answer»

Solution :NaOH is strong alkali than `NH_(4)OH and AI(OH)_(3)` being amphoteric DISSOLVES in NaOH due to the FORMATION os soluble `NaAIO_(2)`.
`I(OH)_(3)+NaOHrarrNaAIO_(2) + 2H_(2)O`


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