When a copper wire is placed in a solution of AgN O_3 , the solut…

MCQ

When a copper wire is placed in a solution of $AgN{O_3}$, the solution acquires blue colour. This is due to the formation of

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Answer

Correct option: A.

$C{u^{2 + }}$ ions

a
(a)Since, $A{g^ + }$ ions are reduced to $Ag$ and $E_{A{g^ + }/Ag}^o > E_{C{u^{ + 2 }}/Cu}^o$ $Cu$ is oxidized to $C{u^{ + 2 }}$.

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ppt $\rightarrow$ colour

$\left( I \right)A + {e^ - } \to {A^\circleddash }\,\,\,\,\,\,{E^o} = + 0.24\,V$

$\left( {II} \right){B^ - } + {e^ - } \to {B^{ - 2}}\,\,\,\,\,\,{E^o} = + 1.25\,V$

$\left( {III} \right){C^ - } + 2{e^ - } \to {C^{ - 3}}\,\,\,\,\,\,{E^o} = + 0.15\,V$

$\left( {IV} \right)D + 2{e^ - } \to {D^{ - 2}}\,\,\,\,\,\,{E^o} = + 0.68\,V$

${H_2}\left( g \right)\,1atm\,|\,{H^ + }\left( {1M} \right)\,||\,C{u^{2 + }}\left( {1M} \right)\,|\,Cu\left( s \right)$

which of the following statements is true