Question

3. State and explain the mechanism of displacement reaction​

Answer 1

Answer:

CuSO4 + Fe → FeSO4 + Cu

Explanation:

It is a reaction by which one element replaces an/other element in a compound. It can be represented generically as: A + B-C → A-C + B This will most often occur if A is more reactive than B, thus giving a more stable product. 

Answer 2

Explanation:

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