Question

what are double displacement reaction
​

Answer 1

A double displacement reaction is a type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products. For example,

Na2S+2HCl→2NaCl+H2S

Answer 2

In double displacement reaction exchange of ions between two chemical compound takes place.

Example:

$\sf{Na_2SO_4+BaCl_2-- >2NaCl+BaSO_4}$

____________

@zaqwertyuioplm :)