SELECT * FROM question_mgmt as q WHERE id=1904 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=3 AND subId=9 AND chapterId=62 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 12th chemistry The p-Block Elements how does ammonia react with a solution of cu2

Question:

How does ammonia react with a solution of Cu2+?

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 from a deep blue coloured complex.The reaction for the above complex can be written as follows:

Cu2+(aq) + 4 NH3(aq)   ⇔  [Cu(NH3)4]2+(aq)

Blue                                         Deep Blue

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

 


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