1.

On adding ammonium hydoxide solution to Al_(2)(SO_(4))_(3) (aq):

Answer»

A PERCIPITATE is formed which does not DISSOLVE in EXCESS of ammonium hydoxide
A percipitate is formed which DISSOLVES in excess of ammonia solution
No precipitate is formed
None of these

Solution :`Al_(2)(SO_(4))_(3)+6NH_(4)OH to 2Al(OH)_(3)+3(NH_(4))_(2)SO_(4)`
`Al(OH)_(3)+NaOH to Na^(+)[Al(OH)_(4)]^(-)` sulublecomplex it is insoluble in `NH_(4)OH`


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