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 cho mỗi chuyển đổi sau:
CaO\(\underrightarrow{\left(1\right)}\)CaCO\(_3\)\(\underrightarrow{\left(2\right)}\)CaO\(\underrightarrow{\left(3\right)}\)Ca(OH)\(_2\)\(\underrightarrow{\left(4\right)}\)CaCl\(_2\)
( 1) \(CaO+CO_2\rightarrow CaCO_3\)
( 2 ) \(CaCO_3\underrightarrow{t^0}CaO+CO_2\uparrow\)
( 3) \(CaO+H_2O\rightarrow Ca\left(OH\right)_2\)
( 4 ) \(Ca\left(OH\right)_2+MgCl_2\rightarrow CaCl_2+Mg\left(OH\right)_2\downarrow\)
1) CaO + CO2 → CaCO3
2) CaCO3 → CaO + CO2 (to)
3) CaO + H2O → Ca(OH)2
4) Ca(OH)2 + 2HCl → CaCl2 + 2H2O
1) CaO + CO2 → CaCO3
2) CaCO3 \(\underrightarrow{t^o}\) CaO + CO2
3) CaO + H2O → Ca(OH)2
4) Ca(OH)2 + 2HCl → CaCl2 + 2H2O
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 các PTHH hoàn thành chuỗi chuyển hóa sau:
\(Cu\left(OH\right)_2\underrightarrow{\left(1\right)}CuO\underrightarrow{\left(2\right)}Cu\underrightarrow{\left(3\right)}CuCl_2\underrightarrow{\left(4\right)}Cu\left(OH\right)_2\underrightarrow{\left(5\right)}CuSO_4\)
(1) Cu(OH)2 -t0-> CuO + H2O
(2) CuO + H2 -t0-> Cu + H2O
(3) Cu + Cl2 -t0-> CuCl2
(4) CuCl2 + 2NaOH - > Cu(OH)2 + 2NaCl
(5) Cu(OH)2 + H2SO4 - > CuSO4 + 2H2O
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 dãy biến hóa sau(ghi rõ đkpứ nếu có)
a.\(Na\underrightarrow{\left(1\right)}Na_2O\underrightarrow{\left(2\right)}NaOH\underrightarrow{\left(3\right)}Na_2SO_4\underrightarrow{\left(4\right)}NaCl\)
b.\(CaO\underrightarrow{\left(1\right)}Ca\left(OH\right)_2\underrightarrow{\left(2\right)}CaCO_3\underrightarrow{\left(3\right)}CaO\underrightarrow{\left(4\right)}CaCl_2\)
a) 1: Na + O2 \(\rightarrow\) Na2O
2: Na2O + H2O \(\rightarrow\) 2NaOH
3: NaOH + SO3 \(\rightarrow\) Na2SO4 + H2O
4: Na2SO4 + BaCl2 \(\rightarrow\) NaCl + BaSO4
b) 1: CaO + H2O \(\rightarrow\) Ca(OH)2
2: Ca(OH)2 + H2CO3 \(\rightarrow\) CaCO3 + 2H2O
3: CaCO3 \(\underrightarrow{t^o}\) CaO + CO2
4: CaO + HCl \(\rightarrow\) CaCl2 + H2O
a) 1. 4Na + O2 → 2Na2O
2. Na2O + H2O → 2NaOH
3. 2NaOH + H2SO4 → Na2SO4 + 2H2O
4. Na2SO4 + BaCl2 → 2NaCl + BaSO4↓
Viết PTHH chuyển hóa sau:
a/ H\(_2\) \(\underrightarrow{\left(1\right)}\) H\(_2\)O \(\underrightarrow{\left(3\right)}\) O\(_2\) \(\underrightarrow{\left(1\right)}\) ZnO
b/ KMnO\(_4\) \(\underrightarrow{\left(3\right)}\) O\(_2\) \(\underrightarrow{\left(1\right)}\) CuO \(\underrightarrow{\left(3\right)}\) Cu
a) 2H2 + O2 ---t0 --> 2H2O
2H2O --- đp ---> 2H2 + O2
2Zn + O2 --- t0 ---> 2 ZnO
b) 2KMnO4 ---t0 --> K2MnO4 +MnO2 +O2
2Cu + O2 --- t0--> 2CuO
CuO + H2 -- t0--> Cu + H2O
Viết các phương trình phản ứng sau:
\(Cu\underrightarrow{1}CuO\underrightarrow{2}CuCl_2\xrightarrow[4]{3}Cu\left(OH\right)_2\xrightarrow[6]{5}Cu\left(NO_3\right)_2\underrightarrow{7}Fe\left(NO_3\right)_2\xrightarrow[10]{9}Fe\left(OH\right)_2\)
\(\left(1\right)Cu+\dfrac{1}{2}O_2\xrightarrow[]{t^0}CuO\\ \left(2\right)CuO+2HCl\rightarrow CuCl_2+H_2O\)
\(\left(3\right)CuCl_2+2NaOH\rightarrow Cu\left(OH\right)_2+2NaCl\\ \left(4\right)Cu\left(OH\right)_2+2HNO_3\rightarrow Cu\left(NO_3\right)_2+2H_2O\\ \left(5\right)Cu\left(NO_3\right)_2+Fe\rightarrow Fe\left(NO_3\right)_2+Cu\\ \left(6\right)Fe\left(NO_3\right)_2+2NaOH\rightarrow Fe\left(OH\right)_2+2NaNO_3\)
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
