If I dissolve it in the presence of water, what will the products be?
Remember when ionic compounds dissolve in water, they dissociate, the split apart.
So the Barium is going to split apart from the acetates to make
a Barium two plus cation, and then the acetate anions will also separate.
They will not only separate from the Barium, but
they will separate from each other.
However, that chunk of polyatomic ion, the C2H3O2,
will stay together, so we will show that like this.
So here is the acetate polyatomic ion that has stayed in tact, and
here is the Barium cation that has separated,
there is water in between those now, because it's aqueous.