Question

A copper coin is kept in a solution of silver nitrate for sometime what will happen to the coin and the colour of the solution

Answer 1

It is the displacement process. According to activity series the Copper is more
active than Silver. So, Silver is displaced by Copper from Silver Nitrate. At the end the products are Copper Nitrate and Silver. Copper Nitrate is in aqueous
form and Silver is in solid form. Chemical Equation: AgNo3(aq) + Cu(s) -----> CuNo3(aq) + Ag(s) .

Answer 2

Copper metal is more reactive than silver metal thus, when copper coin is kept immersed in silver nitrate solution for some time, it displaces silver from silver nitrate solution.

The reaction is :

Cu + 2AgNO3 ---> Cu(NO3)2 + 2Ag

The grey solid crystal of Ag metal are seen growing on the copper coin and solution turns blue in colour.