4Al+3O2=2Al2O3
Al2O3+6HCl=2AlCl3+3H2O
AlCl3+3NaOh=Al(OH)3+3NACl
CuO+HCI=CuCI2+H2O
n(Cu)=80g/80g/m=1m
n(CU)=n(CuCI2)=1m
1m*99,5g/m=99,5g---m(CuCI2)
2Zn+2F=2ZnF2
Zn0-2e-Zn+2
F0+2e-F2
3Fe + 2O2 = <span>Fe3O4
4H2 + Fe3O4 = 3Fe + 4H2O
Fe + H2SO4 = FeSO4 + H2↑
FeSO4 + 2NaOH = Fe(OH)2↓ + Na2SO4
4Fe(OH)2 + O2 + 2H2O = 4Fe(OH)3
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