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Question
Which one of the following is not feasible
Options
\[\ce{Zn_{(s)} + Cu^{2+}_{ (aq)} -> Cu_{(s)} + Zn^{2+}_{ (aq)}}\]
\[\ce{Cu_{(s)} + Zn^{2+}_{ (aq)} -> Zn_{(s)} + Cu^{2+}_{ (aq)}}\]
\[\ce{Cu_{(s)} + 2Ag^+_{ (aq)} -> 2Ag_{(s)} + Cu^{2+}_{ (aq)}}\]
\[\ce{Fe_{(s)} + Cu^2_{ (aq)} -> Cu_{(s)} + Fe^{2+}_{ (aq)}}\]
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Solution
\[\ce{Cu_{(s)} + Zn^{2+}_{ (aq)} -> Zn_{(s)} + Cu^{2+}_{ (aq)}}\]
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