CaO + H2SO4 -> CaSO4 + H2O2Al + 3O2 -> 2Al2O3Fe + 2HCl -> FeCl2 + H2
Mg -> MgO + O2MgO + 2HCl -> MgCl2 + H2O
CaO + H2SO4 -> CaSO4 + H2O
2Al + 3O2 -> 2Al2O3
Fe + 2HCl -> FeCl2 + H2
Mg -> MgO + O2
MgO + 2HCl -> MgCl2 + H2O