1.Na2SO3 + HCl → SO2 + NaCl + H2O
2.Zn + Na2SO3 + HCl → ZnCl2 + H2S + NaCl + H2O
3.Na2SO3 + KMnO4 + HCl → MnCl2 + Na2SO4 + KCl + H2O
4.Na2SO3 + K2Cr2O7 + HCl → CrCl3 + Na2SO4 + KCl + H2O
5.Na2SO3 + HCl → H2SO3 + NaCl
6.H2S + Na2SO3 + HCl → S + NaCl + H2O
7.Na2S + Na2SO3 + HCl → S + NaCl + H2O
8.Mg + Na2SO3 + HCl → MgCl2 + H2S + NaCl + H2O
9.Na2SO3 + SnCl2 + HCl → SnS2 + SnCl4 + NaCl + H2O
10.Na2SO3 + K2Cr2O7 + HCl → CrCl2 + Na2SO4 + KCl + H2O