How does ammonia react with a solution of Cu^(2+)?

1.	How does ammonia react with a solution of Cu^(2+)?
Answer» Solution :`Cu^(2+)` ions REACT with EXCESS of ammonia to form a deep blue coloured COMPLEX. `Cu^(2+)(aq)+4NH_(4)OH(aq)tounderset("Tetramminecopper (II) ion (Deep blue)")([Cu(NH_(3))_(4)]^(2+))+4H_(2)O`

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