1. 2Ca + O2 = 2CaO
CaO + H2O = Ca(OH)2
Ca(OH)2 + SO2 = CaSO3↓ + H2O
2. S + O2 = SO2
SO2 + H2O = H2SO3
H2SO3 + CaCl2 = CaSO3↓ + 2HCl
1) 2 Ca+O2=2CaO
CaO+H2O=Ca(OH)2
Ca(OH)2+SO2=CaSO3⬇+H2O
2)S+O2=SO2
SO2+H2O=H2SO3
H2SO3+CaCI2=CaSO3⬇+2HCI
1. 2Ca + O2 = 2CaO
CaO + H2O = Ca(OH)2
Ca(OH)2 + SO2 = CaSO3↓ + H2O
2. S + O2 = SO2
SO2 + H2O = H2SO3
H2SO3 + CaCl2 = CaSO3↓ + 2HCl
1) 2 Ca+O2=2CaO
CaO+H2O=Ca(OH)2
Ca(OH)2+SO2=CaSO3⬇+H2O
2)S+O2=SO2
SO2+H2O=H2SO3
H2SO3+CaCI2=CaSO3⬇+2HCI