will483 will483 07-06-2019 Chemistry contestada 2. Which balanced equation represents an oxidation-reduction reaction? A) H3PO4 + 3KOH →K3PO4 + 3H20 B) NH3(g) + HCl(g) →NH4Cl(s) C) Fe(s) + S(s) →FeS(s) D) Ba(NO3)2 + Na2SO4 →BaSO4 + 2NaNO3