barium acetate

The reaction is performed in solution and the barium acetate crystallizes out.

When heated in air, barium acetate decomposes to the carbonate.

Again, the solvent is evaporated off and the barium acetate crystallized.

Barium acetate is a soluble salt so this is not a precipitation reaction.

Barium acetate is generally produced by the reaction of acetic acid with barium carbonate:

Barium acetate is used as a mordant for printing textile fabrics, for drying paints and varnishes and in lubricating oil.