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How does ammonia react with blue solutio...

How does ammonia react with blue solution having `Cu^(2+)` ions ?

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`underset(("blue"))(Cu^(2+))(aq)+4NH_(3)(aq)hArr underset(("Deep blue"))([Cu(NH_(3))_(4)]^(2+)(aq))`
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How does ammonia react with a solution of Cu^(2+) ?

This does NOT react with Fehling's solution :

When excess of NH_(3) (aq) is added to a blue solution containing Cu_((aq))^(2+) ions

Alkali metals dissolve in ammonia to give a blue solution which is conducting due to

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