Question

How does ammonia react with a solution of Cu2+?​

Answer 1

Answer:

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Answer 2

Answer:

Ammonia acts as a Lewis base due to the presence of lone pair of electrons on the nitrogen atom.Therefore,it can form coordinate bond with electron deficient molecules or a number of transition metal cations to from complex compounds.Ammonia reacts with a solution of Cu2+to form a deep blue coloured complex.The reaction for the above complex can be written as follows:

Cu (aq)sq2+4NH 3 (aq)⇔[Cu(NH 3 ) 4 ]sq 2+ (aq)

Blue Deep Blue

This property of ammonia to form complex compounds is useful in detection of metal ions.

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