BaCl2 + Fe2(S04)3 → FeCl3 + BaS04
P205 + H20→ H3P04
MnO + 02 →Mn02
Сг(ОН)3 → Сг2О3 + Н20
Na20 + Н20 → NaOH
СаСl2 + K3P04 → Са3(PО4)2 + KCl
FeBr3 + Zn → ZnBr2 + Fe
SO2 +O2 → SO3
Si + F2→SiF4
Р203 + Н20→ H3P03
Ca(OH)2 + Na3P04 → Ca3(P04)2 + NaOH
N02-→ NO + 02
N2 + H2 = NH3
Ca + H3PO4 = Ca3(PO4)2 +H2
Ba(OH)2 + HCl = BaCl2 + H2O
ZnCl2 + AgNO3 = AgCl + Zn(NO3)2
Li + N2 = Li3N
Zn + HCl = ZnCl2 +H2
Fe(OH)3 + HCl = FeCl3 + H2O
BaCl2 + Al2(SO4)3 = AlCl3 + BaSO4

Расстановка коэффициентов.