Question

04 what is difference between displacement and
double displacement reaction ​

Answer 1

Answer:

A single-replacement reaction is a chemical reaction in which one element is substituted for another element in a compound, generating a new element and a new compound as products.  

For example,

an example of a single-replacement reaction. The hydrogen atoms in HCl are replaced by Zn atoms, and in the process a new element hydrogen is formed.  

A double-displacement reaction occurs when parts of two ionic compounds are exchanged, making two new compounds. A characteristic of a double-replacement equation is that there are two compounds as reactants and two different compounds as products.

There are two equivalent ways of considering a double-replacement equation,either the cations are swapped, or the anions are swapped.

Answer 2

Answer:

Displacement reactions: Those reactions in which a more active element displaces a less reactive element from it's compound are called displacement reactions .

These reactions are generally found to occur in the solution. For example:Zn(s)+CuSO⁴(aq)=ZnSo⁴(aq)+Cu(s)

Double displacement reaction:Those reactions in which two different atoms or groups of atoms are exchanged are called double displacement reactions.

These reactions generally occur between two iconic compounds in the solution . Hence, they may be defined as follow:BaCl²(aq)+Na²SO⁴(aq)=BaSO⁴(s)+2NaCl(aq(