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4Al+3O2\(\overset{t^0}{\rightarrow}\)2Al2O3
Al2O3+6HCl\(\rightarrow\)2AlCl3+3H2
AlCl3+3NaOH\(\rightarrow\)Al(OH)3+3NaCl
2Al(OH)3+3H2SO4\(\rightarrow\)Al2(SO4)3+6H2O
Al+O2→Al2O3( có nhiệt độ)
Al2O3+HCl→AlCl3+H2O
AlCl3+ NaOH→Al(OH)3+NaCl
Al(OH)3+H2SO4→Al2(SO4)3+H2O
(bạn tự cân bằng nhé)
a.
(1) 4Al + 3O2 ---> 2Al2O3
(2) \(Al_2O_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)
(3)\(Al_2\left(SO_4\right)_3+6NaOH\rightarrow2Al\left(OH\right)_3\downarrow+3Na_2SO_4\)
(4)\(2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O\)
a, 4Al + 3O2 -> 2Al2O3
Al2O3 + 3H2SO4 -> Al2(SO4)3 + 3H2O
Al2(SO4)3 + 6NaOH -> 2Al(OH)3 + 3Na2SO4
2Al(OH)3 nhiệt độ lên Al2O3 + 3H2O
b, 4Fe + 3O2 -> 2Fe2O3
Fe2O3 + 3H2SO4 -> Fe2(SO4)3 + 3H2O
Fe2(SO4)3 + KOH -> Fe(OH)3
Fe(OH)3 nhiệt độ lên Fe2O3 + h20
Fe2O3 + 6HCl -> 2FeCl3 + 3H2o
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
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
\(2Al+3H_2SO_4\to Al_2(SO_4)_3+3H_2\\ Al_2(SO_4)_3+3BaCl_2\to 2AlCl_3+3BaSO_4\downarrow\\ AlCl_3+3NaOH\to Al(OH)_3\downarrow +3NaCl\\ 2Al(OH)_3\xrightarrow{t^o}Al_2O_3+3H_2O\\ 2Al_2O_3\xrightarrow{đpnc}4Al+3O_2\)
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
AlCl3 +3 NaOH-->Al(OH)3 + 3NaCl
Al(OH)3 + NaOH----->NaAlO2+2H2O
Al2O3+ 2NaOH------>2NaAlO2+H2O
Alcl3----->al(OH)
AlCl3 + 3NaOH -> Al(OH)3 + 3NaCl
Al(OH)3 ---->NaAlo2
Al(OH)3 + NaOH -> NaAlO2 + 2H2O
Al2o3 ------>NaAlo2
Al2O3 + 2NaOH -> 2NaAlO2 + H2O
\(4Al+3O_2\underrightarrow{^{^{t^o}}}2Al_2O_3\)
\(Al_2O_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)
\(Al_2\left(SO_4\right)_3+6NaOH\rightarrow2Al\left(OH\right)_3+3Na_2SO_4\)
\(Al\left(OH\right)_3+3HCl\rightarrow AlCl_3+3H_2O\)
\(4Al+3O_2--^{t^o}->2Al_2O_3\)
\(Al_2O_3+3H_2SO_4--->Al_2\left(SO_4\right)_3+3H_2O\)
\(Al_2\left(SO_4\right)_3+3Cu\left(OH\right)_2--->2Al\left(OH\right)_3+3CuSO_4\)
\(Al\left(OH\right)_3+3HCl---->AlCl_3+3H_2O\)