Bài 3: Hoàn thành chuỗi phản ứng sau:
a. Al → Al2O3→Al2(SO4)3→Al(OH)3 →Al2O3→Al →NaAlO2
b.Al→AlCl3→Al(NO3)3→Al(OH)3→Al2(SO4)3→AlCl3→Al
c. Fe→FeCl2→Fe(OH)2→FeSO4→Fe(NO3)2→Fe→Fe3O4→Fe
d.Fe→FeCl3→Fe→Fe3O4→FeSO4.
Viết các phương trình hóa học thực hiện dãy chuyển hóa:
a. Al → Al2O3 → Al2(SO4)3 → AlCl3
b. Al(OH)3 → Al(NO3)3 → Al → Al2(SO4)3
FeCl3 → Fe(OH)3
c. Fe FeCl2 → Fe(OH)2
Fe3O4 → Fe → FeSO4
d. H2SO4 → CuSO4 → Na2SO4 → NaOH
e. CaCO3 → CO2 → Na2CO3 → BaCO3
f. Mg → MgSO4 → Mg(OH)2
g. MgO → MgCl2 → Mg(NO3)2 → MgCO3
h. CuO CuSO4 CuCl2 Cu(NO3)2 Cu
anh chị nào chỉ em với ạ!em cảm ơn
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
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.
\(\left(1\right)4Al+3O_2\overset{t^o}{--->}2Al_2O_3\)
\(\left(2\right)Al_2O_3+6HCl--->2AlCl_3+3H_2O\)
\(\left(3\right)AlCl_3+3NaOH--->Al\left(OH\right)_3+3NaCl\)
\(\left(4\right)2Al\left(OH\right)_3\overset{t^o}{--->}Al_2O_3+3H_2O\)
\(\left(5\right)Al_2O_3+3H_2SO_4--->Al_2\left(SO_4\right)_3+3H_2O\)
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
\(b,\left(1\right)4Al+3O_2\rightarrow^{t^o}2Al_2O_3\\ \left(2\right)Al_2O_3+6HCl\rightarrow2AlCl_3+3H_2O\\ \left(3\right)AlCl_3+3NaOH\rightarrow Al\left(OH\right)_3+3NaCl\\ \left(4\right)2Al\left(OH\right)_3\rightarrow^{t^o}Al_2O_3+3H_2O\\ \left(5\right)Al_2O_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)
\(a,\left(1\right)Fe+2HCl\rightarrow FeCl_2+H_2\\ \left(2\right)FeCl_2+2NaOH\rightarrow Fe\left(OH\right)_2+2NaCl_2\\ \left(3\right)4Fe\left(OH\right)_2+O_2+2H_2O\rightarrow4Fe\left(OH\right)_3\\ \left(4\right)2Fe\left(OH\right)_3\rightarrow^{t^o}Fe_2O_3+3H_2O\\ \left(5\right)Fe_2O_3+6HCl\rightarrow2FeCl_3+3H_2O\)
Hoàn thành Sơ đồ Phản ứng sau:
A) Cu-> CuSO4-> CuCl2-> CuO-> CuCl2-> Cu
B) Al-> AlCl3-> Al (OH)3-8> AlCl3-> Al-> Al2(SO4)3->AL(OH)3-> AlCl3
C) Fe-> FeSO4-> FeCl2-> Fe(OH)2-> FeO-> Fe-> FeCl2-> Fe-> Fe3O4
a: \(Cu+H_2SO_4->CuSO_4+H_2\)
\(CuSO_4+BaCl_2->CuCl_2+BaSO_4\)
\(2CuCl_2+O_2->2CuO+2Cl_2\)
hoàn thành chuỗi
al(oh)3 -< al2(so4)3 -<alcl3-< al(no3)3-< al(oh)3-<al2o3-<alcl3
fe(oh)2 -< feso4-<fecl2_<fe(no3)2-<fe(oh)2, feo _<fecl2
Al(OH)3 +H2SO4 --> Al2(SO4)3 + BaCl2 --> AlCl3 + AgNO3 --> Al(NO3)3 + Ba(OH)2 --> Al(OH)3 -to-> Al2O3 + HCl --> AlCl3
Fe(OH2) + H2SO4 --> FeSO4 + BaCl2 --> FeCl2 + AgNO3 --> Fe(NO3)2 + Ba(OH)2 --> Fe(OH)2 +O2 -to-> FeO +HCl--> FeCl2
Hoàn thành phản ứng
1. Fe(NO3)3-Fe(OH)3-Fe2O3-FeCl2-Fe(OH)2
2. Ca(OH)2-CaO-CaCO3-CaCl2-CaSO4
3.Al-Al2O3-AlCL3-AL(OH)3-Al2O3-AlCl3
Al-Al2S3-AL2(SO4)3
4. Cu- CuO- CuSO4-Cu(OH)2-CuO-Cu
5. FeCl3- Fe(OH)3-Fe2O3-Fe- Fe3O4
Fe-FeCl2-Fe(OH)2-FeO
Bài 1: Hoàn thành chuỗi chuyển hóa sau:
a. FeCl3 -> Fe(OH) 3 -> Fe2O3 -> Fe2(SO4 )3 -> FeCl 3
b. Al(OH)3 -> Al2O3 -> Al2(SO4)3 -> Al(OH)3 -> AlCl3 ->MgCl2 -> Mg(OH)2 ->MgSO4 -> Mg(NO3 ) 2
c. Ba -> BaO -> Ba(OH) 2 -> BaCO 3 -> BaCl 2 -> Ba(NO3) 2 -> BaSO 4
d. CuSO 4 -> CuCl 2 -> Cu(OH) 2 -> CuO -> Cu-> CuSO 4 -> Cu(NO3 ) 2
e/ Na -> Na2O -> NaOH -> Na2SO3 -> NaCl-> NaOH -> Fe(OH)3 -> Fe2O3 -> Fe2(SO4)3 -> FeCl3 -> Fe(NO3)3
a) Al AbO3→ AlCl3 → Al(OH)3 → Al2O3 → Al→ Al2(SO4)3 → Al And ins b) Fe→FeCl3 → Fe(OH)3→ Fe2O3→ Fe → FeCl2→ Fe → FeSO4
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, \(2Fe+3Cl_2\underrightarrow{t^o}2FeCl_3\)
\(FeCl_3+3NaOH\rightarrow3NaCl+Fe\left(OH\right)_3\)
\(2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O\)
\(Fe_2O_3+3H_2\underrightarrow{t^o}2Fe+3H_2O\)
\(Fe+2HCl\rightarrow FeCl_2+H_2\)
\(Mg+FeCl_2\rightarrow MgCl_2+Fe\)
\(Fe+H_2SO_4\rightarrow FeSO_4+H_2\)
