Viết PTHH hoàn thành chuỗi chuyển hóa sau:
\(a.Na\underrightarrow{\left(1\right)}NaOH\underrightarrow{\left(2\right)}Al\left(OH\right)_3\underrightarrow{\left(3\right)}Al_2O_3\underrightarrow{\left(4\right)}Al\underrightarrow{\left(5\right)}Al_2\left(SO_4\right)_3\underrightarrow{\left(6\right)}BaSO_4\)
(1) 2Na+2H2O--->2NaOH+H2
(2) 3NaOH+Al(NO3)3--->Al(OH)3+3NaNO3
(3) 2Al(OH)3--->Al2O3+3H2O
(4) 2Al2O3-đpnc---> 4Al+3O2
(5) 2Al+3H2SO4--->Al2(SO4)3+3H2
(6) Al2(SO4)3+3BaCl2--->3BaSO4+2AlCl3
(1) 2Na+2H2O->2NaOH+H2
(2) 3NaOH+AlCl3->Al(OH)3+3NaCl
(3) 2Al(OH)3->Al2O3+3H2O
(4) 2Al2O3-điện phân nóng chảy->4Al+3O2
(5) 2Al+3H2SO4->Al2(SO4)3+3H2
(6) Al2(SO4)3+3BaCl2->3BaSO4+2AlCl3
Câu 1 ) A / Mg(NO3) \(\underrightarrow{\left(1\right)}\) Mg(OH)2 \(\underrightarrow{\left(2\right)}\) MgCl2\(\underrightarrow{\left(3\right)}\) KCl \(\underrightarrow{\left(4\right)}\) KNO3
B/ \(Na\underrightarrow{\left(1\right)}Na_2O\underrightarrow{\left(2\right)}NaOH\underrightarrow{\left(3\right)}Na_2SO_4\underrightarrow{\left(4\right)}NaCl\underrightarrow{\left(5\right)}NaNO_3\underrightarrow{\left(6\right)}NaCl\underrightarrow{\left(7\right)}NaOH\)
C/\(Mg\underrightarrow{\left(1\right)}MgO\underrightarrow{\left(2\right)}MgCl_2\underrightarrow{\left(3\right)}Mg\left(NO_3\right)_2\underrightarrow{\left(4\right)}Mg\left(OH\right)_2\underrightarrow{\left(5\right)}MgSO_4\underrightarrow{\left(6\right)}MgCO_3\)
D/\(CuSO_4\underrightarrow{\left(1\right)}Cu\left(OH\right)_2\underrightarrow{\left(2\right)}CuO\underrightarrow{\left(3\right)}CuCl_2\underrightarrow{\left(4\right)}Cu\left(OH\right)_2\underrightarrow{\left(5\right)}CuSO_4\)
E/\(CuCl_2\underrightarrow{\left(1\right)}Cu\left(OH\right)_2\underrightarrow{\left(2\right)}CuSO_4\underrightarrow{\left(3\right)}Cu\underrightarrow{\left(4\right)}CuO\)
F/ \(Cu\left(OH\right)_2\underrightarrow{\left(1\right)}CuO\underrightarrow{\left(2\right)}CuCl_2\underrightarrow{\left(3\right)}Cu\left(NO_3\right)_2\underrightarrow{\left(4\right)}NaNO_3\)
G/\(Fe_2O_3\underrightarrow{\left(1\right)}FeCl_3\underrightarrow{\left(2\right)}Fe\left(OH\right)_3\underrightarrow{\left(3\right)}Fe_2O_3\underrightarrow{\left(4\right)}Fe_2\left(SO_4\right)_3\)
H/ \(ZnCl_2\underrightarrow{\left(1\right)}Zn\left(OH\right)_2\underrightarrow{\left(2\right)}ZnCl_2\underrightarrow{\left(3\right)}NaCl\underrightarrow{\left(4\right)}NaNO_3\)
M/\(CuO\underrightarrow{\left(1\right)}CuCl_2\underrightarrow{\left(2\right)}Cu\left(OH\right)_2\underrightarrow{\left(3\right)}CuO\underrightarrow{\left(4\right)}CuSO_4\)
N/\(Fe\left(OH\right)_2\underrightarrow{\left(1\right)}FeO\underrightarrow{\left(2\right)}FeCl_2\underrightarrow{\left(3\right)}Fe\left(ỌH_2\right)\underrightarrow{\left(4\right)}FeSO_4\underrightarrow{\left(5\right)}FeCl_2\underrightarrow{\left(6\right)}Fe\left(NO_3\right)_2\)
Z/ \(Mg\left(OH\right)_2\underrightarrow{\left(1\right)}MgO\underrightarrow{\left(2\right)}MgSO_4\underrightarrow{\left(3\right)}MgCl_2\underrightarrow{\left(4\right)}Mg\left(OH\right)_2\underrightarrow{\left(5\right)}MgCl_2\underrightarrow{\left(6\right)}Mg\left(NO_3\right)_2\)
X/\(Al\left(OH\right)_3\underrightarrow{\left(1\right)}Al_2O_3\underrightarrow{\left(2\right)}AlCl_3\underrightarrow{\left(3\right)}Al\underrightarrow{\left(4\right)}Al_2\left(SO_4\right)_3\)
g) 1. Fe2O3 + 6HCl → 2FeCl3 + 3H2O
2. FeCl3 + 3NaOH → 3NaCl + Fe(OH)3↓
3. 2Fe(OH)3 \(\underrightarrow{to}\) Fe2O3 + 3H2O
4. Fe2O3 + 3H2SO4 → Fe2(SO4)3 + 3H2O
h) 1. ZnCl2 + 2NaOH → 2NaCl + Zn(OH)2↓
2. Zn(OH)2 + 2HCl → ZnCl2 + 2H2O
3. ZnCl2 + 2NaOH → 2NaCl + Zn(OH)2↓
4. NaCl + AgNO3 → NaNO3 + AgCl↓
m) 1. CuO + 2HCl → CuCl2 + H2O
2. CuCl2 + 2NaOH → 2NaCl + Cu(OH)2↓
3. Cu(OH)2 \(\underrightarrow{to}\) CuO + H2O
4. CuO + H2SO4 → CuSO4 + H2O
Viết PTHH hoàn thành sơ đò chuỗi phản ứng sau
Al(OH)\(_{ }\)\(_3\) \(\underrightarrow{\left(1\right)}\) Al\(_2\)O\(_3\)\(\underrightarrow{\left(2\right)}\) Al\(_2\)(SO\(_4\))\(_3\)\(\underrightarrow{\left(3\right)}\) BaSO\(_4\)
\(1\\ 2Al\left(OH\right)_3\rightarrow\left(t^o\right)Al_2O_3+3H_2O\\ 2\\ Al_2O_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\\ Al_2\left(SO_4\right)_3+3BaCl_2\rightarrow3BaSO_4+2AlCl_3\)
Viết PTHH thực hiện sơ đồ sau:
a) \(KMnO_4\underrightarrow{\left(1\right)}O_2\underrightarrow{\left(2\right)}SO_2\underrightarrow{\left(3\right)}SO_3\underrightarrow{\left(4\right)}H_2SO_4\underrightarrow{\left(5\right)}Al_{2_{ }}\left(SO_4\right)_3\)
b) \(Ca\underrightarrow{\left(1\right)}CaO\underrightarrow{\left(2\right)}Ca\left(OH\right)_2\underrightarrow{\left(3\right)}CaCo_3\underrightarrow{\left(4\right)}H_2\)
Cảm ơn ạ.
a) (1) 2 KMnO4 -to-> K2MnO4 + MnO2 + O2
(2) S + O2 -to-> SO2
(3) 2 SO2 + O2 -450 độ C, xúc tác -> 2 SO3
(4) SO3 + H2O -> H2SO4
(5) 2 Al + 3 H2SO4 -> Al2(SO4)3 +3 H2
b) Các PTHH:
(1) 2 Ca + O2 -to-> 2 CaO
(2) CaO + H2O -> Ca(OH)2
(3) Ca(OH)2 + CO2 -> CaCO3+ H2O
(4) CaCO3 thì không ra H2 được
2KMnO4-to>K2MnO4+MnO2+O2
O2+S-to>SO2
2SO2+O2-to>2SO3
SO3+H2O->H2SO4
3H2SO4+2Al->Al2(SO4)3+3H2
2>
Ca+O2-to>CaO
CaO+H2O->Ca(OH)2+H2
Ca(OH)2+CO2->CaCO3
CaCO3-->H2??
Viết PTHH hoàn thành chuỗi chuyển hóa sau:
\(Fe\underrightarrow{\left(1\right)}FeCl_3\underrightarrow{\left(2\right)}Fe\left(OH\right)_3\underrightarrow{\left(3\right)}Fe_2O_3\underrightarrow{\left(4\right)}Fe_2\left(SO_4\right)_3\underrightarrow{\left(5\right)}FeCl_3\)
(1) 2Fe + 3Cl2 -t0-> 2FeCl3
(2) FeCl3 + 3NaOH - > Fe(OH)3 + 3NaCl
(3) 2Fe(OH)3 -t0-> Fe2O3 + 3H2O
(4) Fe2O3 + 3H2SO4(l) - > Fe2(SO4)3 + 3H2O
(5) Fe2(SO4)3 + 3BaCl2 - > 2FeCl3 + 3BaSO4
1. 2Fe + 3Cl2 \(\rightarrow\)2 FeCl3
2. FeCl3 + 3NaOH \(\rightarrow\) Fe(OH)3 + 3NaCl
3. 2Fe(OH)3 \(\rightarrow\) Fe2O3 + 3H2O
4. Fe2O3 + 3H2SO4 \(\rightarrow\) Fe2(SO4)3 + 3H2O
5. Fe2(SO4)3 + 3BaCl2 \(\rightarrow\) 2FeCl3 + 3BaSO4
Viết PTHH theo dãy chuyển đổi hóa học sau ( ghi rõ đk phản ứng - nếu có)
\(Al\left(OH\right)_3\)→\(Al_2O_3\)→\(Al\)→\(Al_2\left(SO_4\right)_3\)→\(AlCl_3\)
(1) 2Al(OH)3--to--->Al2O3+3H2O
(2) 2Al2O3---dpnc-->4Al+3O2
(3) 2Al+6H2SO4--to-->Al2(SO4)3+6H2O+3SO2
(4) Al2(SO4)3+3BaCl2---->2AlCl3+3BaSO4
Viết PTHH biểu diễn các chuyển đổi sau:
\(Fe\) \(\underrightarrow{\left(1\right)}\) \(FeCl_3\underrightarrow{\left(2\right)}Fe\left(OH\right)_3\underrightarrow{\left(3\right)}Fe_2O_3\underrightarrow{\left(4\right)}Fe_2\left(SO_4\right)_3\)
(1) 2Fe + 3Cl2 -t0-> 2FeCl3
(2) FeCl3 + 3NaOH - > Fe(OH)3\(\downarrow\) + 3NaCl
(3) \(2Fe\left(OH\right)3-^{t0}->Fe2O3+3H2O\)
(4) \(Fe2O3+3H2SO4->Fe2\left(SO4\right)3+3H2O\)
(1) 2Fe + 3Cl2 \(\rightarrow\) 2FeCl3
(2) FeCl3 + 3NaOH \(\rightarrow\) Fe(OH)3 + 3NaCl
(3) 2Fe(OH)3 \(\rightarrow\) Fe2O3 + 3H2O
(4) Fe2O3 + 3H2SO4 \(\rightarrow\) Fe2(SO4)3 + 3H2O
Chọn các chất phù hợp với các chữ cái A, B, D, E rồi viết PTHH thực hiện dãy biến đổi hóa học sau:
\(S\underrightarrow{\left(1\right)}A\underrightarrow{\left(2\right)}B\underrightarrow{\left(3\right)}D\underrightarrow{\left(4\right)}Al_2\left(SO4\right)_3+E\)
\(E\underrightarrow{\left(5\right)}Zn\underrightarrow{\left(6\right)}ZnCl_2\)
(1) S+02===> S02 ( Nhiệt độ)
(2) 2SO2+ 02===> 2S03( ĐIỀU KIỆN V2O5, 450 độ)
(3) S03+ H20=====> H2S04
(4)3 H2S04+ 2Al====> Al2( S04)3+ 3/2H2
(5) ZnO+ H2===> Zn+ H20
(6) Zn+ HCl=====> ZnCl2+ H2
theo tớ nghĩ thôi nhá
Cân bằng PTHH:
\(C_xH_yO_z+O_2\underrightarrow{t^o}CO_2+H_2O\)
\(C_xH_yO+O_2\underrightarrow{t^o}CO_2+H_2O\)
\(Fe_xO_y+H_2SO_{4\left(đ\right)}\underrightarrow{t^o}Fe_2\left(SO_4\right)_3+S+H_2O\)
\(Fe_xO_y+HNO_3\rightarrow Fe\left(NO_3\right)_3+N_2O+H_2O\)
P/s: Ai chỉ em cách cân bằng \(x;y\) zới:(( mẹo cân bằng ý m.n:((
\(2C_xH_yO_z+\dfrac{4x+y-2z}{2}O_2\underrightarrow{t^o}2xCO_2+yH_2O\)
\(2C_xH_yO+\dfrac{4x+y-2}{2}O_2\underrightarrow{t^o}2xCO_2+yH_2O\)
\(6Fe_xO_y+\left(12x-2y\right)H_2SO_{4\left(đ\right)}\underrightarrow{t^o}3xFe_2\left(SO_4\right)_3+\left(3x-2y\right)S+\left(12x-2y\right)H_2O\)
\(8Fe_xO_y+\left(30x-4y\right)HNO_3\rightarrow8xFe\left(NO_3\right)_3+\left(3x-2y\right)N_2O+\left(15x-2y\right)H_2O\)
