Ca(HSO3)2 + Ca(OH)2 = 2CaSO3↓ + 2H2O
Ca(OH)2 + SO2 = CaSO3↓ + H2O
Ca(OH)2 + H2SO3 = CaSO3↓ + 2H2O
Ca(OH)2 + NaHSO3 = NaOH + CaSO3↓ + H2O
Ca(OH)2 + KHSO3 = KOH + CaSO3↓ + H2O
Ca(OH)2 + Na2SO3 = 2NaOH + CaSO3↓
Ca(OH)2 + K2SO3 = 2KOH + CaSO3↓
Ca(OH)2 + Li2SO3 = 2LiOH + CaSO3↓