solution containing copper(II) nitrate (aq) first has some aqueous ammonia added to it. A white precipitate forms.  Addition of more aqueous ammonia results in the precipitate dissolving, forming a clear dark blue solution.  Write reactions for each step in the process.  Hints:  Ksp Cu(OH)2 = 2.2 X 10-20;  Kb NH3 = 1.8 X 10-5 and Kf Cu(NH3)42+ = 1.1 X

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