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Q.

Which of the following statement(s) state the consequences of dipping a Copper plate into a solution of AgNO3  for a long time?

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a

No change

b

A green layer is deposited on the copper plate.

c

Copper displaces silver from silver nitrate solution.

d

Copper displaces nitrogen from silver nitrate solution.

answer is C.

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Detailed Solution

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Copper being more reactive than silver, displaces silver from the silver nitrate solution.
When the copper plate is kept in a silver nitrate solution, silver from the solution gets deposited on the copper plate. 

The displacement reaction so observed is as follows:
2AgNO3(aq)+Cu(s)   CuNO32 (aq)+2Ag(s) 

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