Question

What happened when ammonia is added to a solution of copper sulphate ?

Answer 1

Explanation:

when ammonia is poured into the solution,at first pale blue copper hydroxide(Cu(OH)2) precipitate is formed.

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Answer 2

When ammonia solution is added to a solution of copper ions, you will first see a gelatinous blue solid forming. It consists of insoluble Cu(OH)2. The OH- comes from the basic solution of ammonia. As more NH3 is added, the precipitate dissolves as more [Cu(NH3)4]^2+ is produced.