Question

A copper plate was dipped into a solution of silver nitrate after sometime in black layer was observed on the surface of copper plate state reason for it and write a chemical equation of reaction

Answer 1

Answer:

Cu +2AgNO3~ Cu(NO3)2 +2Ag

Answer 2

Answer :

Black layer was deposited due to coating of silver, because copper being more reactive than silver, displaced silver from silver nitrate solution.

2AgNO3(aq) + Cu ----) Cu(NO3)2(aq) + 2Ag(s)

The above reaction is a displacement reaction in which an atom or a group atom displaces another atom from its compound.