Barium acetate (Ba(C2H3O2)2) is the salt of barium(II) and acetic acid. Barium acetate (Ba(C2H3O2)2) is the salt of barium(II) and acetic acid. Barium acetate is generally produced by the reaction of acetic acid with barium carbonate: The reaction is performed in solution and the barium acetate crystallizes out. Alternatively, barium sulfide can be used: