Cân bằng phương trình sau: \(NaOH+CuCl_2\rightarrow Cu\left(OH\right)_2+NaCl\)
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Viết các PTHH thực hiện các chuỗi biến hóa sau, ghi rõ điều kiện phản ứng ( nếu có ) :
a, SO_2rightarrow Na_2SO_3rightarrow Na_2SO_4rightarrow NaOHrightarrow Na_2CO_3
b, CaOrightarrow CaCO_3rightarrow CaOrightarrow Caleft(OHright)_2rightarrow CaCO_3rightarrow CaSO_4
c, Ferightarrow FeCl_3rightarrow Feleft(OHright)_3rightarrow Fe_2O_3rightarrow Fe_2left(SO_4right)_3rightarrow FeCl_3
d, Ferightarrow FeCl_2rightarrow Feleft(NO_3right)_2rightarrow Feleft(OHright)_2rightarrow FeSO_4
e, Curightar...
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Viết các PTHH thực hiện các chuỗi biến hóa sau, ghi rõ điều kiện phản ứng ( nếu có ) :
a, \(SO_2\rightarrow Na_2SO_3\rightarrow Na_2SO_4\rightarrow NaOH\rightarrow Na_2CO_3\)
b, \(CaO\rightarrow CaCO_3\rightarrow CaO\rightarrow Ca\left(OH\right)_2\rightarrow CaCO_3\rightarrow CaSO_4\)
c, \(Fe\rightarrow FeCl_3\rightarrow Fe\left(OH\right)_3\rightarrow Fe_2O_3\rightarrow Fe_2\left(SO_4\right)_3\rightarrow FeCl_3\)
d, \(Fe\rightarrow FeCl_2\rightarrow Fe\left(NO_3\right)_2\rightarrow Fe\left(OH\right)_2\rightarrow FeSO_4\)
e, \(Cu\rightarrow CuO\rightarrow CuCl_2\rightarrow Cu\left(OH\right)_2\rightarrow CuO\rightarrow Cu\rightarrow CuSO_4\)
f, \(Al_2O_3\rightarrow Al\rightarrow AlCl_3\rightarrow NaCl\rightarrow NaOH\rightarrow Cu\left(OH\right)_2\)
a) SO2 + Na2O -> Na2SO3
Na2SO3 + H2SO4 -> Na2SO4 + SO2 + H2O
Na2SO4 + Ba(OH)2 -> BaSO4 \(\downarrow\)+ 2NaOH
2NaOH + CO2 -> Na2CO3 + H2O
b) CaO + CO2 -> CaCO3
CaCO3 \(\rightarrow^{t^o}\) CaO + CO2
CaO + H2O -> Ca ( OH)2
Ca ( OH)2 + CO2 -> CaCO3 + H2O
CaCO3 + H2SO4 -> CaSO4 + CO2 + H2O
c) 2Fe + 3Cl2 \(\rightarrow^{t^o}\) 2FeCl3
FeCl3 + 3NaOH -> Fe(OH)3 \(\downarrow\) + 3NaCl
2Fe(OH)3 \(\rightarrow^{t^o}\) Fe2O3 + 3H2O
Fe2O3 + 3H2SO4 -> Fe2(SO4)3 + 3H2O
Fe2(SO4)3 + 3BaCl2 -> 2FeCl3 + 3BaSO4\(\downarrow\)
d) Fe + 2HCl -> FeCl2 + H2
FeCl2 + 2AgNO3 -> 2AgCl\(\downarrow\) + Fe(NO3)2
Fe(NO3)2 + 2NaOH -> Fe(OH)2\(\downarrow\) + 2NaNO3
Fe(OH)2 + H2SO4 -> FeSO4 + 2H2O
a, SO2 + 2NaOH \(\rightarrow\)Na2SO3 + H2O
Na2SO3 + H2SO4 \(\rightarrow\)Na2SO4 + H2O + SO2
Na2SO4 + Ba(OH)2\(\rightarrow\) BaSO4+ 2 NaOH
CO2 + 2 NaOH \(\rightarrow\)Na2CO3 + H2O
b, CaO + CO2\(\rightarrow\) CaCO3
CaCO3 -t0-> CaO + CO2
CaO + H2O \(\rightarrow\)Ca(OH)2
Ca(OH)2 + CO2 \(\rightarrow\)CaCO3 + H2O
CaCO3 + H2SO4 \(\rightarrow\)CaSO4 + H2O + CO2
c, 2Fe + 3Cl2 -t0-> 2FeCl3
FeCl3 + 3NaOH \(\rightarrow\)Fe(OH)3 + 3NaCl
2Fe(OH)3 -t0-> Fe2O3 + 3H2O
Fe2O3 + 3H2SO4 \(\rightarrow\)Fe2(SO4)3 + 3H2O
Fe2(SO4)3 + 3BaCl2 \(\rightarrow\)2FeCl3 + 3BaSO4
d, Fe + 2HCl \(\rightarrow\)FeCl2 + H2
FeCl2 + 2AgNO3 \(\rightarrow\)Fe(NO3)2 + 2AgCl
Fe(NO3)2 + 2NaOH \(\rightarrow\)Fe(OH)2 + 2NaNO3
Fe(OH)2 + H2SO4\(\rightarrow\) FeSO4 + 2H2O
e, 2Cu + O2 -t0-> 2CuO
CuO + 2HCl \(\rightarrow\)CuCl2 + H2O
CuCl2 + 2NaOH\(\rightarrow\) Cu(OH)2 + 2NaCl
Cu(OH)2 -t0-> CuO + H2O
CuO + H2 -t0-> Cu + H2O
Cu + 2H2SO4đặc \(\rightarrow\)CuSO4 + SO2 + 2H2O
f, 2Al2O3 -đpnc/ criolit-> 4Al + 3O2
2Al + 3Cl2 -t0-> 2AlCl3
AlCl3 + 3NaOH \(\rightarrow\)Al(OH)3 + 3NaCl
2NaCl + 2H2O -đpmn-> 2NaOH + Cl2 + H2
2NaOH + CuCl2 \(\rightarrow\)Cu(OH)2 + 2NaCl
Thực hiện chuyển hóa:
\(Cu\rightarrow CuO\rightarrow CuSO_4\rightarrow CuCl_2\rightarrow Cu\left(NO_3\right)_2\rightarrow Cu\left(OH\right)_2\rightarrow CuO\rightarrow Cu\rightarrow CuSO_4\rightarrow Cu\rightarrow SO_2\)
2Cu + O2 ➝ 2CuO
CuO + H2SO4 ➝ CuSO4 + H2O
CuSO4 + BaCl2 ➝ CuCl2 + BaSO4↓
CuCl2 + 2AgNO3 ➝ Cu(NO3)2 + 2AgCl↓
Cu(NO3)2 +2NaOH➝Cu(OH)2↓+ 2NaNO3
Cu(OH)2 \(\underrightarrow{t^o}\)CuO + H2O
CuO + H2 ➝ Cu + H2O
Cu + 2H2SO4(đ) \(\xrightarrow[]{t^o}\) CuSO4 + SO2 + 2H2O
CuSO4 + Fe ➝ Cu + FeSO4
Cu + 2H2SO4(đ) \(\xrightarrow[]{t^o}\) CuSO4 + SO2 + 2H2O
Điều chế \(Cu\left(OH\right)_2\) ta dùng chất nào sau đây?
A. \(CuCl_2\) và KOH
B. \(CuSO_4\) và NaCl
C. Cu và NaOH
D. \(Cu\left(NO_3\right)_2\) và KCl
Cho các chất: \(CuSO_4;CuO;Cu\left(OH\right)_2;Cu;CuCl_2\). Sắp xếp thành dãy chuyển hóa và viết phương trình
2Cu + O2 ➝ 2CuO
CuO + H2SO4 ➝ CuSO4 + H2O
CuSO4 + BaCl2 ➝ CuCl2 + BaSO4↓
CuCl2 + 2AgNO3 ➝ Cu(NO3)2 + 2AgCl↓
Cu(NO3)2 +2NaOH➝Cu(OH)2↓+ 2NaNO3
Cu(OH)2 to→to→CuO + H2O
CuO + H2 ➝ Cu + H2O
Cu + 2H2SO4(đ) → CuSO4 + SO2 + 2H2O
CuSO4 + Fe ➝ Cu + FeSO4
Cu + 2H2SO4(đ) → CuSO4 + SO2 + 2H2O
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Cho các chất: \(CuSO_4;CuO;Cu;Cu\left(OH\right)_2;CuCl_2\). Sắp xếp thành dãy chuyển hóa và viết phương trình
$Cu \to CuO \to CuSO_4 \to CuCl_2 \to Cu(OH)_2$
$2Cu + O_2 \xrightarrow{t^o} 2CuO$
$CuO + H_2SO_4 \to CuSO_4 + H_2O$
$CuSO_4 + BaCl_2 \to CuCl_2 + BaSO_4$
$CuCl_2 + 2KOH \to Cu(OH)_2 + 2KCl$
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Cân bằng phương trình phản ứng sau:
\(P_2O_5+Ca\left(OH\right)_2\rightarrow Ca_3\left(PO_4\right)_2+H_2O\)
\(FeO_3+H_2O\rightarrow Fe\left(OH\right)_3\)
P2O5 + 3Ca(OH)2 _> Ca3(PO4)2 + 3H2O
Fe2O3 + 3H2O _> 2Fe(OH)3
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KHÔNG ĐĂNG CÂU HỎI KHÔNG LIÊN QUAN TỚI TOÁN
CHÚC BẠN HỌC GIỎI ! !!
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Viết các phương trình phản ứng sau:
\(Cu\underrightarrow{1}CuO\underrightarrow{2}CuCl_2\xrightarrow[4]{3}Cu\left(OH\right)_2\xrightarrow[6]{5}Cu\left(NO_3\right)_2\underrightarrow{7}Fe\left(NO_3\right)_2\xrightarrow[10]{9}Fe\left(OH\right)_2\)
\(\left(1\right)Cu+\dfrac{1}{2}O_2\xrightarrow[]{t^0}CuO\\ \left(2\right)CuO+2HCl\rightarrow CuCl_2+H_2O\)
\(\left(3\right)CuCl_2+2NaOH\rightarrow Cu\left(OH\right)_2+2NaCl\\ \left(4\right)Cu\left(OH\right)_2+2HNO_3\rightarrow Cu\left(NO_3\right)_2+2H_2O\\ \left(5\right)Cu\left(NO_3\right)_2+Fe\rightarrow Fe\left(NO_3\right)_2+Cu\\ \left(6\right)Fe\left(NO_3\right)_2+2NaOH\rightarrow Fe\left(OH\right)_2+2NaNO_3\)
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Cân bằng các pt sau
1. \(CaO+H_2O\rightarrow Ca\left(OH\right)_2\)
2. \(Cu+Cl_2\rightarrow CuCl_2\)
3. \(Zn+HCl\rightarrow ZnCl_2+H_2\)
1. \(CaO+H_2O\rightarrow Ca\left(OH\right)_2\)
2. \(Cu+Cl_2\rightarrow CuCl_2\)
Đề j đâu mà 2 cái pt đầu đã tự cân bằng
3. \(Zn+2HCl\rightarrow ZnCl_2+H_2\)
\(CaO+H_2O\rightarrow Ca\left(OH\right)_2\)
\(Cu+Cl_2\rightarrow CuCl_2\)
\(Zn+2HCl\rightarrow ZnCl_2+H_2\)
https://i.imgur.com/W0whRM6.jpg
Câu 1 ) A / Mg(NO3) underrightarrow{left(1right)} Mg(OH)2 underrightarrow{left(2right)} MgCl2underrightarrow{left(3right)} KCl underrightarrow{left(4right)} KNO3
B/ Naunderrightarrow{left(1right)}Na_2Ounderrightarrow{left(2right)}NaOHunderrightarrow{left(3right)}Na_2SO_4underrightarrow{left(4right)}NaClunderrightarrow{left(5right)}NaNO_3underrightarrow{left(6right)}NaClunderrightarrow{left(7right)}NaOH
C/Mgunderrightarrow{left(1right)}MgOunderrightarrow{left(2right)}MgCl_2underrightarrow{left...
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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
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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↓
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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
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