Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
$(1) 2Al_2O_3 \xrightarrow{đpnc} 4Al + 3O_2$
$2Al + 6HCl \to 2AlCl_3 + 3H_2$
$AlCl_3 + 3KOH \to Al(OH)_3 + 3KCl$
$(2) Fe_2O_3 + 3CO \xrightarrow{t^o} 2Fe + 3CO_2$
$2Fe + 3Cl_2 \xrightarrow{t^o} 2FeCl_3$
$FeCl_3 + 3KOH \to Fe(OH)_3 + 3KCl$
$(3) 2Fe + 3Cl_2 \xrightarrow{t^o} 2FeCl_3$
$FeCl_3 + 3KOH \to Fe(OH)_3 + 3KCl$
$2Fe(OH)_3 \xrightarrow{t^o} Fe_2O_3 + 3H_2O$
$Fe_2O_3 + 3CO \xrightarrow{t^o} 2Fe + 3CO_2$
$Fe + 6H_2SO_4 \to Fe_2(SO_4)_3 + 3SO_2 + 6H_2O$
![](https://rs.olm.vn/images/avt/0.png?1311)
\((1)2SO_2+O_2\xrightarrow[V_2O_5]{t^o}2SO_3\\ (2)SO_3+H_2O\to H_2SO_4\\ (3)H_2SO_4+MgO\to MgSO_4 +H_2O\\ (4)MgSO_4+2NaOH\to Na_2SO_4+Mg(OH)_2\downarrow\)
![](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)
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)
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)
\(4FeS_2+11O_2\rightarrow2Fe_2O_3+8SO_2\)
\(Fe_2O_3+6HCl\rightarrow2FeCl_3+3H_2O\)
\(FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_3+3NaCl\)
\(2Fe\left(OH\right)_3\rightarrow Fe_2O_3+3H_2O\)
\(H_2O+BaO\rightarrow Ba\left(OH\right)_2\)
\(MgCl_2+2NaOH\to Mg(OH)_2\downarrow+2NaCl\\ Mg(OH)_2\xrightarrow{t^o}MgO+H_2O\\ Fe(NO_3)_3+3NaOH\to 3NaNO_3+Fe(OH)_3\downarrow\\ 2Fe(OH)_3+3H_2SO_4\to Fe_2(SO_4)_3+6H_2O\)