Question

Observe double displacement reaction given in the text book and write down the similarities

Answer 1

In displacement reaction, one element from its salt is displaced by a more reactive element e.g. in following example, Cu is displaced by Zn from CuSO4 because Zn is more reactive.

CuSO4 + Zn —> ZnSO4 + Cu  

In double displacement reaction, exchange of ions takes place between two reactants to form new products.

Na2SO4 + BaCl2 —> BaSO4 + 2NaCl