CaO + H2SO4 -> CaSO4 + H22Al + 3O2 -> 2Al2OFe + 2HCl -> FeCl2 + H2
Mg -> MgO + OMgO + 2HCl -> MgCl2 + H2O
CaO + H2SO4 -> CaSO4 + H2
2Al + 3O2 -> 2Al2O
Fe + 2HCl -> FeCl2 + H2
Mg -> MgO + O
MgO + 2HCl -> MgCl2 + H2O