MgSO3 + 2HCl = MgCl2 + H2O + SO2↑
(NH4)2SO3 + 2HCl = 2NH4Cl + H2O + SO2↑
KHSO3 + HCl = KCl + H2O + SO2↑
HCl + NaHSO3 = NaCl + H2O + SO2↑
BaSO3 + 2HCl = BaCl2 + H2O + SO2↑
2HCl + Li2SO3 = 2LiCl + H2O + SO2↑
2HCl + Ba(HSO3)2 = BaCl2 + 2H2O + 2SO2↑
2HCl + Ca(HSO3)2 = CaCl2 + 2H2O + 2SO2↑
CaSO3 + 2HCl = CaCl2 + H2O + SO2↑
2HCl + Na2SO3 = 2NaCl + H2O + SO2↑
2HCl + K2SO3 = 2KCl + H2O + SO2↑