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When a copper wire is placed I a solutio...

When a copper wire is placed I a solution of `AgNO_3`, the solution acquires blue colour. This due to the formation of .

A

`Cu^(2+)` ions

B

`Cu^(+)` ions

C

Soluble complex of copper with `AgNO_3`

D

`Cu^(-)` ion by the reduction of Cu

Text Solution

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The correct Answer is:
A
Since, `Ag^(+)` ions are reduced to Ag and `E_(Ag^(+)//Ag)^(@)gtE_(Cu^(+)//Cu)^(@)` is oxidized to `Cu^(++)` Standard electrode potential of hydrogen is zero.
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