. What are double displacement reactions? Give an example.


Best Answer

 Double displacement is a reaction in which compounds exchange their ions, i.e. two atoms or ions displace each other. 

       Ba(NO3)2 (aq)  +  (NH4)2CO3(aq)  --------  BaCO3   +   2NH4NO3(aq) 

       Barium nitrate         Ammonium                         Barium       Ammonium

       Carbonate                      Carbonate                                         Nitrate

 

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