A copper plate was dipped into a solution silver nitrate. After sometimes, a black layer was observed on the surface of copper plate. State the reason for it and write chemical equation of the reaction involved
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When the copper plate is dipped in silver nitrate solution then a chemical reaction takes place,
- Cu + AgNO₃ → Cu(NO₃)₂ + Ag
Hence, this is a displacement reaction where more reactive metal (Copper) displaces less reactive metal (Silver) from it's compound (AgNO₃)
Therefore a new compound, Cu(NO₃)₂ is formed in this reaction which has a black colour deposit on plate.
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Answer :-
Black layer was deposited due to the coating of silver because copper being more reactive than silver, displaced silver from silver nitrate solution.
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