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Ammonia forms the complex `[Cu(NH_3)_4]^(+2)` with copper ions in alkaline solfution but not in acidic solution. the reason for this is :-
A. |
In alkaline solution `Cu(OH)_2` is precipitated which is soluble in exccess of alkali |
B. |
Copper hydroxide is amphoteric substance |
C. |
In acidic solution hydration of `Cu^+2` ions |
D. |
In acidic solution protons are cordianted with ammonia molecules forming `NH_4^+` ions |
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