Question

What happens when silver is placed in copper sulphate solution?

• A. $Cu$ is replaced by $Ag$
• B. $Ag$ is replaced by $Cu$
• C. $Ag$ is replaced by sulphur
• D. No reaction occurs

Answer 1

The correct option is D No reaction occurs

From the reactivity series we can see that the more reactive metal can replace less reactive metal from a solution. In this case, $Ag$ is less reactive metal than $Cu$. So, $Ag$ can’t replace $Cu$ to form $AgS{O}_4$. So no reaction takes place.