Question

viết PTHH thực hiện chuỗi biến hóa sau

a, Al2O3->Al->Al(NO3)3->Al(OH)3->Al2O3->Al2(SO4)3->AlCl3->AL->Cu

b, Fe->FeCl3->Fe(OH)3->Fe2O3->Fe->FeCl2->Fe(NO3)2->FeCO3->FeSO4

c, Mg->MgO->MgCl2->Mg(OH)2->MgSO4->MgCl2->Mg(NO3)2->MgCO3

d, Cu(OH)2->CuO->CuSO4->CuCl2->Cu(NO3)2->Cu->CuO

Answer 1

a.

2Al2O3 \(\underrightarrow{t^o}\)4Al + 3O2\(\uparrow\)

Al + 6HNO3 \(\rightarrow\) Al(NO3)3\(\downarrow\) + 3NO2 + 3H2O

Al(NO3)3 + NaOH \(\rightarrow\) Al(OH)3\(\downarrow\) + NaNO3

2Al(OH)3 \(\xrightarrow[criolit]{đpnc}\) Al2O3 + 3H2O

Al2O3 + 3H2SO4 \(\rightarrow\) Al2(SO4)3 + 3H2O

Al2(SO4)3 + 3BaCl2 \(\rightarrow\) 3BaSO4\(\downarrow\) + 2AlCl3

2AlCl3 \(\xrightarrow[criolit]{đpnc}\) 2Al + 3Cl2\(\uparrow\)

2Al + 3CuSO4 \(\rightarrow\) 3Cu + Al2(SO4)3

Answer 2

Answer 3

C.

Answer 4

d.