name ametallic hydroxide which is insoluble in caustic soda but soluble in excees of ammonium hydroxides.

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Solution

Copper hydroxide is soluble in excess ammonium hydroxide because of the formation of a soluble product.

Cu(OH)₂ + 4 NH₄OH $\to$ [Cu(NH₃)₄](OH)₂+ 4H₂O

However copper hydroxide is not soluble in caustic soda (NaOH)

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name ametallic hydroxide which is insoluble in caustic soda but soluble in excees of ammonium hydroxides.

Copper hydroxide is soluble in excess ammonium hydroxide because of the formation of a soluble product. Cu(OH)2 + 4 NH4OH →[Cu(NH3)4](OH)2 + 4H2O ​However copper hydroxide is not soluble in caustic soda (NaOH)

Copper hydroxide is soluble in excess ammonium hydroxide because of the formation of a soluble product.

Cu(OH)₂ + 4 NH₄OH $\to$ [Cu(NH₃)₄](OH)₂+ 4H₂O

However copper hydroxide is not soluble in caustic soda (NaOH)