Hoàn thành chuỗi biến hóa sau:
a) Fe → FeCl2 → Fe(OH)2 → Fe(OH)3 → Fe2O3 → FeCl3
b) Al → Al2O3 → AlCl3 → Al(OH)3 → Al2O3 → Al2(SO4)3
K
Khách
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
Những câu hỏi liên quan
18 tháng 11 2021
\(b,\left(1\right)4Al+3O_2\rightarrow^{t^o}2Al_2O_3\\ \left(2\right)Al_2O_3+6HCl\rightarrow2AlCl_3+3H_2O\\ \left(3\right)AlCl_3+3NaOH\rightarrow Al\left(OH\right)_3+3NaCl\\ \left(4\right)2Al\left(OH\right)_3\rightarrow^{t^o}Al_2O_3+3H_2O\\ \left(5\right)Al_2O_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)
18 tháng 11 2021
\(a,\left(1\right)Fe+2HCl\rightarrow FeCl_2+H_2\\ \left(2\right)FeCl_2+2NaOH\rightarrow Fe\left(OH\right)_2+2NaCl_2\\ \left(3\right)4Fe\left(OH\right)_2+O_2+2H_2O\rightarrow4Fe\left(OH\right)_3\\ \left(4\right)2Fe\left(OH\right)_3\rightarrow^{t^o}Fe_2O_3+3H_2O\\ \left(5\right)Fe_2O_3+6HCl\rightarrow2FeCl_3+3H_2O\)
17 tháng 12 2023
a, \(2Al+3O_2\underrightarrow{t^o}2Al_2O_3\)
\(Al_2O_3+6HCl\rightarrow2AlCl_3+3H_2O\)
\(AlCl_3+3NaOH\rightarrow3NaCl+Al\left(OH\right)_3\)
\(2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O\)
\(Al_2O_3\underrightarrow{đpnc}2Al+\dfrac{3}{2}O_2\)
\(2Al+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2\)
\(Al_2\left(SO_4\right)_3+3Mg\rightarrow3MgSO_4+2Al\)
b, \(2Fe+3Cl_2\underrightarrow{t^o}2FeCl_3\)
\(FeCl_3+3NaOH\rightarrow3NaCl+Fe\left(OH\right)_3\)
\(2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O\)
\(Fe_2O_3+3H_2\underrightarrow{t^o}2Fe+3H_2O\)
\(Fe+2HCl\rightarrow FeCl_2+H_2\)
\(Mg+FeCl_2\rightarrow MgCl_2+Fe\)
\(Fe+H_2SO_4\rightarrow FeSO_4+H_2\)
30 tháng 11 2017
\(a,\) \(2Fe+3Cl_2->2FeCl_3\)
\(FeCl_3+3NaOH->Fe\left(OH\right)_3+3NaCl\)
\(2Fe\left(OH\right)_3->Fe_2O_3+3H_2O\)
\(Fe_2O_3+3CO->2Fe+3CO_2\)
\(Fe+2HCl->FeCl_2+H_2\)
LT
20 tháng 12 2019
a) 2Fe+3Cl2--->2FeCl3
FeCl3+3NaOH--->3NaCl+Fe(OH)3
3Fe(OH)3-->Fe2O3+3H2O
Fe2O3+H2---->2Fe+3H2O
Fe+H2SO4---->FeSO4+H2
FeSO4+BaCl2---->FeCl2+BaSO4
b) Fe+2HCl--->FeCl2+H2
FeCl2+AgNO3--->2AgCl+Fe(NO3)2
Fe(NO3)2+2NaOH--->2NaNO3+Fe(OH)2
Fe(OH)2+Na2SO4--->2NaOH+FeSO4
FeSO4+Zn----->ZnSO4+Fe
Fe+.....Ko biết
c)4 Al+3O2--->2Al2O3
Al2O3+3H2SO4--->Al2(SO4)3+3H2O
Al2(SO4)3+3BaCl2---->2AlCl3+3BaCl2
Alcl3+3NaOH--->Al(OH)3+3NaCl
2Al(OH)3--->Al2O3+3H2O
2Al2O3--->4Al+3O2
NT
20 tháng 12 2019
a) 2Fe+3Cl2--->2FeCl3
FeCl3+3NaOH--->3NaCl+Fe(OH)3
3Fe(OH)3-->Fe2O3+3H2O
Fe2O3+H2---->2Fe+3H2O
Fe+H2SO4---->FeSO4+H2
FeSO4+BaCl2---->FeCl2+BaSO4
b) Fe+2HCl--->FeCl2+H2
FeCl2+AgNO3--->2AgCl+Fe(NO3)2
Fe(NO3)2+2NaOH--->2NaNO3+Fe(OH)2
Fe(OH)2+Na2SO4--->2NaOH+FeSO4
FeSO4+Zn----->ZnSO4+Fe
ko có PTHH
c)4 Al+3O2--->2Al2O3
Al2O3+3H2SO4--->Al2(SO4)3+3H2O
Al2(SO4)3+3BaCl2---->2AlCl3+3BaCl2
Alcl3+3NaOH--->Al(OH)3+3NaCl
2Al(OH)3--->Al2O3+3H2O
2Al2O3--->4Al+3O2
24 tháng 12 2021
a: \(Cu+H_2SO_4->CuSO_4+H_2\)
\(CuSO_4+BaCl_2->CuCl_2+BaSO_4\)
\(2CuCl_2+O_2->2CuO+2Cl_2\)
a.
\(\left(1\right)Fe+2HCl--->FeCl_2+H_2\)
\(\left(2\right)FeCl_2+2NaOH--->2NaCl+Fe\left(OH\right)_2\)
\(\left(3\right)4Fe\left(OH\right)_2+O_2+2H_2O\overset{t^o}{--->}4Fe\left(OH\right)_3\)
\(\left(4\right)2Fe\left(OH\right)_3\overset{t^o}{--->}Fe_2O_3+3H_2O\)
\(\left(5\right)Fe_2O_3+6HCl--->2FeCl_3+3H_2O\)
b.
\(\left(1\right)4Al+3O_2\overset{t^o}{--->}2Al_2O_3\)
\(\left(2\right)Al_2O_3+6HCl--->2AlCl_3+3H_2O\)
\(\left(3\right)AlCl_3+3NaOH--->Al\left(OH\right)_3+3NaCl\)
\(\left(4\right)2Al\left(OH\right)_3\overset{t^o}{--->}Al_2O_3+3H_2O\)
\(\left(5\right)Al_2O_3+3H_2SO_4--->Al_2\left(SO_4\right)_3+3H_2O\)
kkkkkkkkkkk