Bài 1. Viết các PTHH thực hiện các chuỗi biến hoá sau, ghi rõ điều kiện phản ứng(nếu có)
Al2O3->Al->Al2(SO4)3->AlCl3->Al(OH)3
Giúp mình với ạ, mình cảm ơn rất nhiều.
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Những câu hỏi liên quan
11 tháng 12 2021
\(2Al+3H_2SO_4\to Al_2(SO_4)_3+3H_2\\ Al_2(SO_4)_3+3BaCl_2\to 2AlCl_3+3BaSO_4\downarrow\\ AlCl_3+3NaOH\to Al(OH)_3\downarrow +3NaCl\\ 2Al(OH)_3\xrightarrow{t^o}Al_2O_3+3H_2O\\ 2Al_2O_3\xrightarrow{đpnc}4Al+3O_2\)
H
25 tháng 12 2022
$(1) 2Al_2O_3 \xrightarrow{đpnc} 4Al + 3O_2$
$2Al + 6HCl \to 2AlCl_3 + 3H_2$
$AlCl_3 + 3KOH \to Al(OH)_3 + 3KCl$
$(2) Fe_2O_3 + 3CO \xrightarrow{t^o} 2Fe + 3CO_2$
$2Fe + 3Cl_2 \xrightarrow{t^o} 2FeCl_3$
$FeCl_3 + 3KOH \to Fe(OH)_3 + 3KCl$
$(3) 2Fe + 3Cl_2 \xrightarrow{t^o} 2FeCl_3$
$FeCl_3 + 3KOH \to Fe(OH)_3 + 3KCl$
$2Fe(OH)_3 \xrightarrow{t^o} Fe_2O_3 + 3H_2O$
$Fe_2O_3 + 3CO \xrightarrow{t^o} 2Fe + 3CO_2$
$Fe + 6H_2SO_4 \to Fe_2(SO_4)_3 + 3SO_2 + 6H_2O$
16 tháng 12 2022
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
LT
20 tháng 12 2019
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
NT
20 tháng 12 2019
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
16 tháng 1 2022
$a)(1)S+O_2\xrightarrow{t^o}SO_2$
$(2)2SO_2+O_2\xrightarrow[V_2O_5]{t^o}2SO_3$
$(3)SO_3+H_2O\to H_2SO_4$
$(4)H_2SO_4+2NaOH\to Na_2SO_4+2H_2O$
$(5)Na_2SO_4+BaCl_2\to BaSO_4\downarrow+2NaCll$
$b)(1)SO_2+2NaOH\to Na_2SO_3+H_2O$
$(2)Na_2SO_3+H_2SO_4\to Na_2SO_4+H_2O+SO_2\uparrow$
$(3)Na_2SO_4+Ba(OH)_2\to BaSO_4\downarrow+2NaOH$
$(4)2NaOH+CO_2\to Na_2CO_3+H_2O$
$c)(1)CaO+CO_2\to CaCO_3$
$(2)CaCO_3\xrightarrow{t^o}CaO+CO_2$
$(3)CaO+H_2O\to Ca(OH)_2$
$(4)Ca(OH)_2+CO_2\to CaCO_3\downarrow+H_2O$
$(5)CaCO_3+H_2SO_4\to CaSO_4+H_2O+CO_2\uparrow$
$d)(1)2Fe+3Cl_2\xrightarrow{t^o}2FeCl_3$
$(2)FeCl_3+3NaOH\to Fe(OH)_3\downarrow+3NaCl$
$(3)2Fe(OH)_3\xrightarrow{t^o}Fe_2O_3+3H_2O$
$(4)Fe_2O_3+3H_2SO_4\to Fe_2(SO_4)_3+3H_2O$
$(5)Fe_2(SO_4)_3+3BaCl_2\to 2FeCl_3+3BaSO_4\downarrow$
$e)(1)Fe+2HCl\to FeCl_2+H_2$
$(2)FeCl_2+2AgNO_3\to Fe(NO_3)_2+2AgCl\downarrow$
$(3)Fe(NO_3)_2+2NaOH\to Fe(OH)_2\downarrow+2NaNO_3$
$(4)Fe(OH)_2+H_2SO_4\to FeSO_4+2H_2O$
$f)(1)2Cu+O_2\xrightarrow{t^o}2CuO$
$(2)CuO+2HCl\to CuCl_2+H_2O$
$(3)CuCl_2+2NaOH\to Cu(OH)_2\downarrow+2NaCl$
$(4)Cu(OH)_2\xrightarrow{t^o}CuO+H_2O$
$(5)CuO+H_2\xrightarrow{t^o}Cu+H_2O$
$(6)Cu+2H_2SO_{4(đ)}\to CuSO_4+SO_2\uparrow+2H_2O$
$g)(1)2Al_2O_3\xrightarrow[criolit]{đpnc}4Al+3O_2$
$(2)2Al+6HCl\to 2AlCl_3+3H_2$
$(3)AlCl_3+3NaOH\to Al(OH)_3\downarrow+3NaCl$
$(4)2NaCl+2H_2O\xrightarrow[cmn]{đpdd}2NaOH+Cl_2\uparrow+H_2\uparrow$
$(5)NaOH+CuCl_2\to Cu(OH)_2\downarrow+2NaCl$
LT
12 tháng 12 2019
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
\(\left(1\right)2Al_2O_3\xrightarrow[Na_3AlF_6]{đpnc}4Al+3O_2\uparrow\)
\(\left(2\right)2Al+3H_2SO_4--->Al_2\left(SO_4\right)_3+3H_2\uparrow\)
\(\left(3\right)Al_2\left(SO_4\right)_3+3BaCl_2--->3BaSO_4\downarrow+2AlCl_3\)
\(\left(4\right)AlCl_3+3NaOH--->Al\left(OH\right)_3\downarrow+3NaCl\)