A) \[C{{u}^{2+}}ions\]
B) \[Cu{{(OH)}_{2}}\]
C) \[{{[Cu{{(N{{H}_{3}})}_{4}}]}^{2+}}\]
D) none of these
Correct Answer: C
Solution :
Copper sulphate dissolves in ammonical solution as it forms complex compound with ammonia. \[CuS{{O}_{4}}+4N{{H}_{4}}OH\xrightarrow{{}}\] \[\underset{\text{deep}\,\text{blue}}{\mathop{[Cu{{(N{{H}_{3}})}_{4}}]\,S{{O}_{4}}}}\,+4{{H}_{2}}O\]
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