The blue colour obtained by the addition of excess dil. NH_(4)OH to an – InterviewSolution

1.	The blue colour obtained by the addition of excess dil. NH_(4)OH to an aqueous solution of a salt containing copper is due to the presence of :
Answer» `CuSO_(4)` `CU(OH)_(2)` `(NH_(4))_(2)SO_(4)` `[Cu(NH_(3))_(4)]^(+2)` ANSWER :D

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