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4Fe + 3O2-----nhiệt độ 2Fe2O3
Fe2O3 không tạo ra Fe(OH)3 nhe bạn
Fe(OH)3 + HCl---> FeCl3 + H2
2FeCl3 + 3Ag2SO4---> Fe2(SO4)3 +6 AgCl
c) 4FeS2+ 11O2--->8SO2 +2Fe2O3
Fe2O3+3H2--->2Fe+3H2O
2Fe +6HCl--->2FeCl3 +3H2
FeCl3+3NaOH--->Fe(OH)3+ 3NaCl
2Fe(OH)3 +3H2SO4---->Fe2(SO4)3 +3H2O
d)2 Fe +6HCl-->2FeCl3+3H2
FeCl3 + 3NaOH--->Fe(OH)3 +3NaCl
2Fe(OH)3 --->Fe2O3 +3H2O
e) Fe +2HCl---.FeCl2 +H2
FeCl2+2NaOH---->Fe(OH)2 +2NaCl
Fe(OH)2 +2AgNO3---> Fe(NO3)2 +2AgOH
Chúc bạn học tốt
Nhớ tích cho mình nhé
a) 4K+ O2--->2K2O
K2O+H2O-------->.2KOH
KOH+ NaCO3--->K2CO3+NaOH
K2CO3+2HCl---->2KCl+H20+CO2
B) 2Cu+O2---->2CuO
CuO+H2SO4---->CuSO4+ H2O
CuSO4+ 2NaOH--->Cu(OH)2 +Na2SO4
Cu(OH)2----->CuO+H2O
2CuO--->2Cu+O2
Chúc bn học tốt
\(Fe\underrightarrow{1}Fe_2\left(SO_4\right)_3\underrightarrow{2}Fe\left(OH\right)_3\underrightarrow{3}Fe_2O_3\underrightarrow{4}Fe\underrightarrow{5}FeCl_2\underrightarrow{6}Fe\left(NO_3\right)_2\)
(1) \(2Fe+6H_2SO_{4đặc}\underrightarrow{t^o}Fe_2\left(SO_4\right)_3+3SO_2+6H_2O\)
(2) \(Fe_2\left(SO_4\right)_3+6NaOH\rightarrow2Fe\left(OH\right)_3+3Na_2SO_4\)
(3) \(2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O\)
(4) \(Fe_2O_3+3H_2\underrightarrow{t^o}2Fe+3H_2O\)
(5) \(Fe+2HCl\rightarrow FeCl_2+H_2\)
(6) \(FeCl_2+2AgNO_3\rightarrow Fe\left(NO_3\right)_2+2AgCl\)
Chúc bạn học tốt
1) 3Fe+3Cl2 -) 2FeCl3
2) FeCl3+3NaOH -) Fe(OH)3+3Nacl
3) 2Fe(OH)3 -t độ-) Fe2O3 + 3H20
4) Fe2O3+ 3H2SO4 -) Fe2(SO4)3 + 3H2O
5) Fe2(SO4)3 + 3Bacl2 -) 2FeCl3 + 3BaSO4
a) S +O2(1)-> SO2
(2)2SO2+O2-> 2SO3
(3)SO3+H2O---> H2SO4
(4)H2SO4+2NaOH-> Na2SO4+2H2O
(5)Na2SO4+BaCl2----> BaSO4+2NaCl
b) 2Fe +3Cl2---->2FeCl3
(2)FeCl3+3NaOH-> Fe(OH)3 +3NaCl
(3)2Fe(OH)3----> Fe2O3+3H2O
(4)Fe2O3+3H2SO4--> Fe2(SO4)3+3H2O
(5)Fe2(SO4)3+6NaCl-> 2FeCL3+3Na2SO4
c) Fe +2HCl--> FeCl2+H2
(2)FeCl2+2AgNO3-> Fe(NO3)2 +2AgCl
(3)Fe(NO3)2+2NaOH----> Fe(OH)2 +2NaNO3
(4)Fe(OH)2+MgSO4---> FeSO4+Mg(OH)2
d) 4Al+3o2 ----> 2Al2O3
(2)Al2O3+3H2SO4---> Al2(SO4)3 +3H2O
(3)Al2(SO4)3+3BaCl2-> 2AlCl3 +3BaSO4
(4)AlCl3+3AgNO3----> Al(NO3)3 +3AgCl
(5)Al(NO3)3+3NaOH-> Al(OH)3 +3NaNO3
(6)2Al(OH)3-----> Al2O3+3H2O
e) 4Na +O2-> 2Na2O
(2)Na2O+H2O-> 2NaOH
(3)2NaOH+H2SO4-> Na2SO4+2H2O
(4)Na2SO4+BaCl2-> 2NaCl+BaSO4
(5)NaCl+AgNO3---> NaNO3+AgCl
$(1) 2Al_2O_3 \xrightarrow{đpnc} 4Al + 3O_2$
$2Al + 6HCl \to 2AlCl_3 + 3H_2$
$AlCl_3 + 3KOH \to Al(OH)_3 + 3KCl$
$(2) Fe_2O_3 + 3CO \xrightarrow{t^o} 2Fe + 3CO_2$
$2Fe + 3Cl_2 \xrightarrow{t^o} 2FeCl_3$
$FeCl_3 + 3KOH \to Fe(OH)_3 + 3KCl$
$(3) 2Fe + 3Cl_2 \xrightarrow{t^o} 2FeCl_3$
$FeCl_3 + 3KOH \to Fe(OH)_3 + 3KCl$
$2Fe(OH)_3 \xrightarrow{t^o} Fe_2O_3 + 3H_2O$
$Fe_2O_3 + 3CO \xrightarrow{t^o} 2Fe + 3CO_2$
$Fe + 6H_2SO_4 \to Fe_2(SO_4)_3 + 3SO_2 + 6H_2O$
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
\(2Fe\left(OH\right)_3-^{t^o}\rightarrow Fe_2O_3+3H_2O\\ Fe_2O_3+3H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+3H_2O\\ Fe_2\left(SO_4\right)_3+3BaCl_2\rightarrow2FeCl_3+3BaSO_4\\ FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_3+3NaCl\)
(1) 2Fe(OH)3 \(^{to}\rightarrow\) Fe2O3 + 3H2O
(2) Fe2O3 + 6HCl -> 2FeCl3 + 3H2O
(3) FeCl3 + 3AgNO3 -> 3AgCl \(\downarrow\) + Fe(NO3)3
(4) Fe(NO3)3 + 3NaOH -> 3NaNO3 + Fe(OH)3 \(\downarrow\)
(5)2 Fe(OH)3 + 3H2SO4 -> Fe2(SO4)3 + 6H2O
pthh:
(1) 2Fe(OH)3 \(\underrightarrow{t^o}\) Fe2O3 + 3H2O
(2) Fe2O3 + 6HCl \(\rightarrow\) 2FeCl3 + 3H2O
(3) FeCl3 + 3AgNO3 \(\rightarrow\) 3AgCl ↓ + Fe(NO3)3
(4) Fe(NO3)3 + 3KOH \(\rightarrow\) 3KNO3 + Fe(OH)3 ↓
(5) 2Fe(OH)3 + 3CuSO4 \(\rightarrow\) Fe2(SO4)3 + 3Cu(OH)2
\(Fe_2O_3+3H_2\underrightarrow{t^o}2Fe+3H_2O\)
\(2Fe+3Cl_2\underrightarrow{t^o}2FeCl_3\)
\(FeCl_3+3NaOH\rightarrow3NaCl+Fe\left(OH\right)_3\)
\(2Fe\left(OH\right)_3+3H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+6H_2O\)