Question

Displacement reaction and double displacement reaction

Answer 1

Answer:

Displacement reaction: Chemical reaction in which one reactant is being displaced by another reactant to obtain the ion .There is only single exchange of ion taking place.

Example:

Zn+2HCl=ZnCl2+H2

In this zinc replaces hydrogen and forms zinc chloride

Double Displacement reaction: Chemical reaction in which two reactants exchanges each other ions to form new compounds.

Example: AgNO3+NaCl=AgCl+NaNO3

In this exchange of ions is taking place between Ag &Na.

Na replaces Ag to form NaNO3 and Ag takes place of Na and forms NaCl.

Answer 2

$\huge\star\bold\red{Hello!}$

$\Large\sf\pink{Displacement\:Reaction:-}$

Those reactions in which is more reactive element displaces with less reactive elements from its compound. Such reaction is called as displacement reaction.

Ex- Fe + CuS04 $\longrightarrow$ FeSO4 + Cu

In this reaction, iron has displaced copper from copper sulphate solution.

$\Large\sf\purple{Double\:Displacement\:Reaction:-}$

The reaction to which there is exchange of Ions between the reactants are called as double displacement reaction.

Ex- Na2SO4 + BaCl2 $\longrightarrow$ BaSO4 + 2NaCl

In this case, the white precipitate of BaSO4 is formed by the reaction of

$\sf{SO4}^{2 - }$ and $\sf{Ba}^{2+}$ . The other product formed is sodium chloride which remains in the solution.