1)
Ca+H2SO4-->CaSO4+H2
CaSO4 + MgO-->MgSO4+CaO
CaO+2HCL-->CaCL2+H2O
CaCL2+2NaOH-->Ca(OH)2+2NaCL
2)
Si+O2-->SiO2
SiO2+Na2O-->Na2SiO3
3)
4Li+O2-->2Li2O
Li2O+HOH-->2LiOH
2LiOH+H2SO4-->Li2SO4+2H2O
1)
Ca+H2SO4-->CaSO4+H2
CaSO4 + MgO-->MgSO4+CaO
CaO+2HCL-->CaCL2+H2O
CaCL2+2NaOH-->Ca(OH)2+2NaCL
2)
Si+O2-->SiO2
SiO2+Na2O-->Na2SiO3
3)
4Li+O2-->2Li2O
Li2O+HOH-->2LiOH
2LiOH+H2SO4-->Li2SO4+2H2O