CaSO3 + 2HNO3 = Ca(NO3)2 + SO2 + H2O
MnCl2 + 2LiOH = Mn(OH)2 + 2LiCl
FeCl3 + 3NaOH = Fe(OH)3 + 3NaCl
AgNO3 + HCl = AgCl + HNO
ZnSO4 + H2S = ZnS + H2SO4
KOH + NH4Cl = KCl + NH4OH
lCl3 + NH4Cl = NH4[AlCl4]
2Na3CO3 + 3Ca(OH)2 = 6NaOH + Ca3(CO3)2