Question #4cc71

1 Answer
Sep 12, 2017

Double displacement reaction is a chemical reaction in which 2 ionic compound change switch their components to make new compound, you can think about is as swapping of anions or cations between the two compounds:

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Let us take for example:

#BaCl_2 + Na_2SO_4 rarr BaSO_4 + 2NaCl#

#Ba^(2+)2Cl^(-) +2Na^+SO_4^(2-)#

by switching the anions or cations we get:
#Ba^(2+)SO_4^(2-) +2Na^+2Cl^(-)#

#Ba^(2+)2Cl^(-) +2Na^+SO_4^(2-) rarr Ba^(2+)SO_4^(2-) +2Na^+2Cl^(-)#
#rarr#
#BaCl_2 + Na_2SO_4 rarr BaSO_4 + 2NaCl#