The equation CaCO3 + BaCl2 -> BaCO3 + CaCl2

The chemical equation above represents the chemical reaction between Calcium carbonate (CaCO₃) and Barium chloride (BaCl₂) to form Barium carbonate (BaCO₃) and Calcium chloride (CaCl₂).

Reaction condition: This reaction takes place when the reactants are mixed steadily with each other and have sufficient temperature to start the reaction.

Reaction Process: When Calcium carbonate and Barium chloride come into contact, they form Barium carbonate and Calcium chloride. This is a displacement reaction, where the ions of the two original compounds exchange positions to form two new compounds.

Occurrence Phenomenon: If the reaction takes place in a solution, we could see a change in color and sometimes the mixture becomes cloudy due to the formation of precipitate. In this case, Barium carbonate (BaCO₃) is a solid insoluble in water and will form a white precipitate when formed.