4Al+3O2=2Al2O3
Al2O3+6HCl=2AlCl3+3H2O
AlCl3+3NaOH=Al(OH)3+3NaCl
2Al(OH)3=(t) Al2O3+3H2O
4P+5O2=2P2O5
P2O5+3H2O=2H3PO4
H3PO4+3NaOH=Na3PO4+3H2O
2Na3PO4+3CaCl2=6NaCl+Ca3(PO4)2
Zn+2HCl=ZnCl2+H2
ZnCl2+2NaOH=Zn(OH)2+2NaCl
Zn(OH)2=(t) ZnO+H2O
ZnO+2HNO3=Zn(NO3)2+H2O
2Cu+O2=2CuO
CuO+2HCl=CuCl2+H2O
CuCl2+2NaOH=Cu(OH)2+2NaCl
Cu(OH)2=(t) CuO+H2O
CuO+H2=Cu+H2O
N2O5+H2O=2HNO3
2HNO3+Fe(OH)2=Fe(NO3)2+2H2O
Fe(NO3)2+2NaOH=Fe(OH)2+2NaNO3
Fe(OH)2+H2S=FeS+2H2O
FeS+H2SO4=FeSO4+H2S