Chemistry

Chemistry

Problem

When aqueous ammonia is added to a solution that contains copper(II) sulfate, the following overall transformation occurs. Cu2+(aq)+4 NH3(aq)+SO42−(aq)→[Cu(NH3)4]2+(aq)+SO42−(aq)\text{Cu}^{2+}(aq)+4\,\text{NH}_3(aq)+\text{SO}_4^{2-}(aq)\rightarrow[\text{Cu}(\text{NH}_3)_4]^{2+}(aq)+\text{SO}_4^{2-}(aq) Which ion in the equation is a spectator? a) Cu2+\text{Cu}^{2+} b) SO42−\text{SO}_4^{2-} c) NH3\text{NH}_3 d) [Cu(NH3)4]2+[\text{Cu}(\text{NH}_3)_4]^{2+}

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