What does Ammonium phosphate + Barium acetate yield?

##(NH_4)_2HPO_4 + Ba(OAc)_2 rarr BaHPO_4(s)darr + 2(NH_4)^+""^(-)OAc(aq)##

##"Barium biphosphate"## would be a fairly insoluble beast in aqueous solution. On the other hand ammonium acetate would display substantial solubility. You will have to look up the solubilities.

I used ##"ammonium biphosphate"## in the equation because this is the commercial product, and is widely used as a fertilizer.