2Ca+O2=2CaO
CaO+H2O=Ca(OH)2
Ca(OH)2+BaSO4=CaSO4+Ba(OH)2
CaSO4+Na2O=Na2SO4+CaO
Na2SO4+2HCl=2NaCl+H2SO4
1)CaO +H2O= Ca(OH)2
2)CaSO4 + 2NaCl= CaCl2 + NaSO4
2Ca+O2=2CaO
CaO+H2O=Ca(OH)2
Ca(OH)2+BaSO4=CaSO4+Ba(OH)2
CaSO4+Na2O=Na2SO4+CaO
Na2SO4+2HCl=2NaCl+H2SO4
1)CaO +H2O= Ca(OH)2
2)CaSO4 + 2NaCl= CaCl2 + NaSO4