Mg→Mgo→Mg (OH)2→MgCe2

Question

Mg→Mgo→Mg (OH)2→MgCe2

Answer 1

1)2Mg+O2→2MgO
2)MgO+H2O→Mg(OH)2
3)Mg(OH)2+2HCl→MgCl2+2H2O