Given that, E _ Ni ^ 2+ / Ni ^ =-0.25 ~V , E _ Cu ^ 2+ / Cu ^ =+0.34 ~V E _ Ag ^ 2+ / Ag…

Chemistry · JEE Advanced · NTA Exams — Some Basic Concepts in Chemistry

1. \(\mathrm{Ni}^{2+}(\mathrm{aq})+\mathrm{Cu}(\mathrm{~s}) \rightarrow \mathrm{Ni}(\mathrm{~s})+\mathrm{Cu}^{2+}(\mathrm{aq})\)
2. \(\mathrm{Cu}(\mathrm{~s})+2 \mathrm{Ag}^{+}(\mathrm{aq}) \rightarrow \mathrm{Cu}^{2+}(\mathrm{aq})+2 \mathrm{Ag}(\mathrm{~s})\)
3. \(\mathrm{Cu}(\mathrm{~s})+2 \mathrm{H}^{+}(\mathrm{aq}) \rightarrow \mathrm{Cu}^{2+}(\mathrm{aq})+\mathrm{H}_{2}(\mathrm{~g})\)
4. \(\mathrm{Zn}(\mathrm{~s})+2 \mathrm{H}^{+}(\mathrm{aq}) \rightarrow \mathrm{Zn}^{2+}(\mathrm{aq})+\mathrm{H}_{2}(\mathrm{~g})\)

Answer

(A) Ni ^ 2+ ( aq )+ Cu ( ~s ) Ni ( ~s )+ Cu ^ 2+ ( aq ), (C) Cu ( ~s )+2 H ^ + ( aq ) Cu ^ 2+ ( aq )+ H _ 2 ( ~g )

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