1. 2Ca+O2=2CaO
CaO+H2O=Ca(OH)2
Ca(OH)2+2HCL=CaCl2+2H2O
CaCl2 + Na2SO4 = CaSO4 + 2NaCl
2. S+O2=SO2
SO2+O2=SO3
SO3+H2O=H2SO4
H2SO4=Cu(OH)2=CuSO4+2H2O
1. 2Ca+O2=2CaO
CaO+H2O=Ca(OH)2
Ca(OH)2+2HCL=CaCl2+2H2O
CaCl2 + Na2SO4 = CaSO4 + 2NaCl
2. S+O2=SO2
SO2+O2=SO3
SO3+H2O=H2SO4
H2SO4=Cu(OH)2=CuSO4+2H2O