Question

A copper plate was dipped in a solution of silver nitrate.After sometime,a black layer was obsserved on the surface of copper plate . State the reason for and write chemical equation of the surface of copper plate. State the reason for it and write chemical equation of the reaction involved

Answer 1

because of corrusion

Answer 2

Cu+2(AgNO3)=Cu(NO3)2+2Ag
black color layer is formed because Cu(NO3)2 is black in colour.
this happens because Cu is more reactive than Ag so it displace Ag from its salt.