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In the silver plating of copper, K[Ag(CN...

In the silver plating of copper, `K[Ag(CN)_(2)]` is used instead of `AgNO_(3)` . The reason is

A

More voltage is requred

B

`Ag^(+)`ions are completely removed from solution

C

A thin layer of Ag is formed on Cu

D

Less availability of `Ag^(+)` ions,as Cu cannot displace from `[Ag(CN)_(2)]^(-)` ion

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The correct Answer is:
D
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