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![](https://rs.olm.vn/images/avt/0.png?1311)
a, \(FeCl_3+3NaOH\rightarrow3NaCl+Fe\left(OH\right)_{3\downarrow}\)
\(2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O\)
\(Fe_2O_3+3H_2\underrightarrow{t^o}2Fe+3H_2O\)
b, (1) \(Fe+2HCl\rightarrow FeCl_2+H_2\)
\(FeCl_2+Zn\rightarrow ZnCl_2+Fe\)
\(Fe+H_2SO_{4\left(l\right)}\rightarrow FeSO_4+H_2\)
\(FeSO_4+2NaOH\rightarrow Na_2SO_4+Fe\left(OH\right)_{2\downarrow}\)
\(Fe\left(OH\right)_2\xrightarrow[khongcokhongkhi]{t^o}FeO+H_2O\)
\(FeO+H_2\underrightarrow{t^o}Fe+H_2O\)
(2) \(3Fe+2O_2\underrightarrow{t^o}Fe_3O_4\)
\(Fe_3O_4+4H_2\underrightarrow{t^o}3Fe+4H_2O\)
\(2Fe+6H_2SO_{4\left(đ\right)}\underrightarrow{t^o}Fe_2\left(SO_4\right)_3+3SO_2+6H_2O\)
c, \(2FeS_2+\dfrac{11}{2}O_2\underrightarrow{t^o}Fe_2O_3+4SO_2\)
\(2SO_2+O_2⇌2SO_3\)
\(SO_3+H_2O\rightarrow H_2SO_4\)
\(CuO+H_2SO_4\rightarrow CuSO_4+H_2O\)
\(CuSO_4+2NaOH\rightarrow Cu\left(OH\right)_2+Na_2SO_4\)
\(Na_2SO_4+Ba\left(OH\right)_2\rightarrow2NaOH+BaSO_4\)
\(2NaOH+ZnO\rightarrow Na_2ZnO_2+H_2O\)
Bạn tham khảo nhé!
![](https://rs.olm.vn/images/avt/0.png?1311)
a, CaO + H2O -> Ca(OH)2
Ca(OH)2 + CO2 -> CaCO3 + H2O
CaCO3 -> (t°) CaO + CO2
CO2 + NaOH -> NaHCO3
NaHCO3 + NaOH -> Na2CO3 + H2O
Na2CO3 + Ba(OH)2 -> 2NaOH + BaCO3
b, 2Fe + 3Cl2 -> (t°) 2FeCl3
FeCl3 + 3NaOH -> 3NaCl + Fe(OH)3
2Fe(OH)3 -> (t°) Fe2O3 + 3H2O
Fe2O3 + 3H2SO4 -> Fe2(SO4)3 + 3H2O
Fe2(SO4)3 + 3Ba(OH)2 -> 2Fe(OH)3 + 3BaSO4
![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(Fe + 2HCl \rightarrow FeCl_2 + H_2\)
\(FeCl_2+Ba(OH)_2 \rightarrow Fe(OH)_2 + BaCl_2\)
b)
\(Fe_2(SO_4)_3 + 3BaCl_2 \rightarrow 2FeCl_3 + 3BaSO_4\)
\(2FeCl_3 + 3Ba(OH)_2 \rightarrow 2Fe(OH)_3 + 3BaCl_2\)
\(2Fe(OH)_3 \) \(\underrightarrow{t^o}\) \(Fe_2O_3 + 3H_2O\)
\(Fe_2O_3 + 3H_2SO_4 \rightarrow Fe_2(SO_4)_3 + 3H_2O\)
![](https://rs.olm.vn/images/avt/0.png?1311)
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
![](https://rs.olm.vn/images/avt/0.png?1311)
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
![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(Ba\rightarrow Ba\left(OH\right)_2\rightarrow BaCl_2\rightarrow Ba\left(NO_3\right)_2\rightarrow BaCO_3\)
\(Ba+2H_2O\rightarrow Ba\left(OH\right)_2+H_2\uparrow\)
\(Ba\left(OH\right)_2+2HCl\rightarrow BaCl_2+2H_2O\)
\(BaCl_2+2AgNO_3\rightarrow Ba\left(NO_3\right)_2+2AgCl\downarrow\)
\(Ba\left(NO_3\right)_2+K_2CO_3\rightarrow2KNO_3+BaCO_3\downarrow\)
b) \(Fe\rightarrow Fe_3O_4\rightarrow Fe_2O_3\rightarrow Fe_2\left(SO_4\right)_3\rightarrow FeCl_3\rightarrow Fe\left(OH\right)_3\rightarrow Fe\left(NO_3\right)_3\)
\(3Fe+2O_2\xrightarrow[]{t^o}Fe_3O_4\)
\(2Fe_3O_4+\dfrac{1}{2}O_2\xrightarrow[]{t^o}3Fe_2O_3\)
\(Fe_2O_3+3H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+3H_2O\)
\(Fe_2\left(SO_4\right)_3+3BaCl_2\rightarrow2FeCl_3+3BaSO_4\downarrow\)
\(FeCl_3+3KOH\rightarrow Fe\left(OH\right)_3\downarrow+3KCl\)
\(Fe\left(OH\right)_3+3HNO_3\rightarrow Fe\left(NO_3\right)_3+3H_2O\)
$2Fe + 3Cl_2 \xrightarrow{t^o} 2FeCl_3$
$FeCl_3 + 3KOH \to Fe(OH)_3 + 3KCl$
$2Fe(OH)_3 \xrightarrow{t^o} Fe_2O_3 + 3H_2O$
$Fe_2O_3 + 3H_2SO_4 \to Fe_2(SO_4)_3 + 3H_2O$
$Fe_2(SO_4)_3 + 6KOH \to 3K_2SO_4 + 2Fe(OH)_3$
$K_2SO_4 + BaCl_2 \to BaSO_4 + 2KCl$