BaF2 + Na2S = BaS2 + NaF

Dear student,
The above reaction is an example of Double displacement type of chemical reaction.


A Double Displacement Reaction is a bimolecular process in which parts of two compounds are exchanged to give two new compounds. The general equation used to represent double displacement reactions can be written as:

AB + CD → AD + BC

An example of the double displacement reaction is as follows

Thus, double Displacement Reactions have two common features:

  • Firstly, two compounds exchange their ions resulting in the formation of new compounds.
  • Secondly, one of the new products formed would be separated from the mixture in some way (commonly as a solid or gas)

Hope this information will clear your doubts about topic.

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