Question

The reaction taking place when a copper coin is placed in silver nitrate solution is a:
(1) displacement reaction
(2) combination reaction
(3) double displacement reaction
(4) decomposition reaction​

Answer 1

Copper is more reactive than silver. So, when copper coin is kept immersed in silver nitrate solution , cu displaces Ag from silver nitrate solution to form copper nitrate solution. The grey colour of silver metal is growing on copper and the colour of solution turns blue from colourless.