Fe+CuCl2--->Cu+FeCl2
3Zn+2FeBr3--->3ZnBr2+2Fe
3HgCl2+2Al--->2AlCl3+3Hg
Mg+2H2O--->H2+Mg(OH)2
Fe2O3+3H2--->3H2O+2Fe
3PbO+2Al--->Al2O3+3Pb
Cr2O3+3Mg--->3MgO+2Cr
2Al+6H2O--->2Al(OH)3+3H2
Fe+CuCl2--->Cu+FeCl2
3Zn+2FeBr3--->3ZnBr2+2Fe
3HgCl2+2Al--->2AlCl3+3Hg
Mg+2H2O--->H2+Mg(OH)2
Fe2O3+3H2--->3H2O+2Fe
3PbO+2Al--->Al2O3+3Pb
Cr2O3+3Mg--->3MgO+2Cr
2Al+6H2O--->2Al(OH)3+3H2