1.

Ammonia form the complex ion[Cu(NH_(3))_(4)]^(2+) with copper ions inthe alkaline solution but not In acidic solution. What is the statement-2 for it?

Answer»

In acidic solution hydration PROTECT copper ions
In acidic solution protons co-ordinate with ammonia molecules forming `NH_(4)^(+)` ion and `NH_(3)` molecules are not available
In ALKALINE solution insolution `CU(OH)_(2)` is PRECIPITATED which is soluble in excess of any alkali
Copper hydroxide is an amphoteric substance.

Solution :The pair of electrons PRESENT with nitrogen will not be available to bedonates as `H^(+)` will consumed that one.


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