lexiseaton3 lexiseaton3 06-06-2019 Chemistry contestada Balance and state of the reactions are precipitation, acid/base, or oxidation/reduction reactions. A) Fe + O2 -> Fe2O3 B) Br2 + Fe(NO3)2 + KNO3 -> KBr + Fe(NO3)3 C) Ba(OH)2 + HNO3 -> H2O + Ba(NO3)2 D) NaF + Mg(NO3)2 -> MgF + NaNO3