5.
Explain displacement reaction with the help of an example. Also write the chemical equation. Why
copper is not able to displace zinc present in zinc sulphate?
Answers
Explanation:
The blue colour of copper sulphate solution gradually disappears due to the formation of zinc sulphate. The copper metal produced in this displacement reaction forms a red-brown coating over the zinc strip. A less reactive metal cannot displace a more reactive metal from its salt solution
In a displacement reaction more reactive element displaces a less reactive element to form a compound. displacement reaction can be seen in metals and non-metals both.
Examples: Zinc displaces iron ions from iron sulphate solution.
nickle displaces copper from copper nitrate solution.
Copper is less reactive than zinc and so placed below zinc in the reactivity series of metals. ... Hence, copper cannot displace zinc from its salt solution. for example, when a piece of copper is added to zinc sulphate solution, no reaction takes place.