Question

what is double displacement reaction ? give it's 10 examples.​

Answer 1

What Is a Double Displacement Reaction?

Let's imagine ourselves going to a dance and having a dance partner. Once we arrive, we interact with the other people, and we end up switching dance partners with another person. Now you end up with a new dance partner. The same kind of thing can be compared to what occurs in a double displacement reaction in chemistry.

A double displacement reaction, also known as a double replacement reaction or metathesis, 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. Here, you can see the general form of a double displacement reaction

Examples of Double Displacement Reactions

For our first example, we'll look at the reaction between Li 2 SO 4 and BaCl2 . SO4 is a polyatomic ion, so we will treat this as one anion. The ion SO4 does not have a subscript (4 is not the subscript because this is included in the ion). The subscript of SO4 is 1. Let's first determine the ions and their charges.

Li2SO4 and BaCl2 Ions

Now, we can switch the ions and come up with the double displacement reaction.

Li2SO4 and BaCl2 Reaction

For our next example, let's look at the reaction between NaOH and CaBr2 . For this reaction, OH is a polyatomic ion and is treated as one whole anion. The individual ions and the charges for these two reactants are demonstrated in this :

NaOH and CaBr2 Ions

Now, we can switch the ions.

Answer 2

Double displacement reaction is any reaction in which exchange of ions between two reactants occur , leading to the formation of two different products.

$ab \: + \: cd \: = \: ad \: + \: cb$

There are three types of double displacement reactions: precipitation, neutralization and gas formation.