Question

What is displacement reaction?What rules governs displacement of an elements in a compound by another elements.Explain with an example?

Answer 1

Answer:

Displacement reaction ;

It is reaction in which higher reactive metal displaces the lower

reactive metal from its salt solution .

Reactivity of metal rules governs displacement of an elements

in a compound by another elements .

Series of reactivity is as ;

K  >  Na   >  Ca   >  Mg    >  Al  >   C   >  Zn   >  Fe   >  Sn  > Pb  >

 H  >  Cu   >  Ag  >  Au  >  Pt .

Some example of displacement reaction are ;

$\displaystyle{CuSO_4+Fe\implies FeSO_4 +Cu}\\\\\\\displaystyle{Zn+HCl\implies ZnCl_2 +H_2}\\\\\\\displaystyle{CuSO_4+Mg\implies MgSO_4 +Cu}\\\\\\\displaystyle{Fe_2O_3+Al \implies Al_2O_3+Fe}$

Answer 2

Answer :-

Displacement reaction :-

➩ Displacement reaction means one element displaces other element from its compound to form another compound.

Rule :-

➺ Single displacement reaction rule governs displacement of an element in a compound by another element.

➺ A more reactive element displaces the less reactive element from its compound.

Example –

CuSO4 + Fe ⟶ FeSO4 + Cu