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\(km\underrightarrow{\times10}...\underrightarrow{\times10}...\underrightarrow{\times10}...\underrightarrow{\times10}...\underrightarrow{\times10}...\underrightarrow{\times10}mm\)
Những câu hỏi liên quan
hoàn thành chuỗi phản ứng sau
\(KCLO_2\underrightarrow{t^{o^{ }}}P_2^{_{ }}O_3\underrightarrow{ }H_2PO_4\underrightarrow{ }H_2\)
\(\underrightarrow{ }NA_2O\underrightarrow{ }NAOH\)
\(H_2O\underrightarrow{ }H_2\underrightarrow{ }Cu\)
2KClO3-to>2KCl+3O2
4P+3O2-to>2P2O3
P2O3+3H2O->2H3PO4
2H3PO4+2Al->2AlPO4+3H2
4Na+O2-to>2Na2O
Na2O+H2O->2NaOH
2H2+O2-to>2H2O
2H2O-đp->2H2+O2
H2+CuO-to>Cu+H2O
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15 tháng 4 2021 lúc 20:40
viết pt dãy chuyển hóa
\(CaC_2\underrightarrow{\left(1\right)}CH=CH\)\(\underrightarrow{\left(2\right)}C_2H_4\underrightarrow{\left(3\right)}C_2H_5OH\)\(\underrightarrow{\left(4\right)}CH_3COOH\underrightarrow{\left(5\right)}CH_3COOC_2H_5\)
\((1) CaC_2 + 2H_2O \to Ca(OH)_2 + C_2H_2\\ (2) C_2H_2 + H_2 \xrightarrow{t^o,PbCO_3} C_2H_4\\ (3) C_2H_4 + H_2O \xrightarrow{t^o,H^+} C_2H_5OH\\ (4) C_2H_5OH + O_2 \xrightarrow{men\ giấm} CH_3COOH + H_2O\\ (5) CH_3COOH + C_2H_5OH \buildrel{{H_2SO_4}}\over\rightleftharpoons CH_3COOC_2H_5 + H_2O\)
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15 tháng 4 2021 lúc 20:52
viết pt dãy chuyển hóa:
a. \(C_2H_5OH\underrightarrow{\left(1\right)}CO_2\)
b. \(CO\underrightarrow{\left(1\right)}CO_2\underrightarrow{\left(2\right)}NaHCO_3\)\(\underrightarrow{\left(3\right)}Na_2CO_3\underrightarrow{\left(4\right)}NaCl\)\(\underrightarrow{\left(5\right)}NaOH\)
C2H5OH+3O2-to>2CO2+3H2O
b>
CO+O2-to>CO2
CO2+NaOH->NaHCO3
2NaHCO3-to>Na2CO3+H2O
Na2CO3+HCl->NaCl+H2O+CO2
NaCl+H2O-đp>NaOH+Cl2+H2
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\(a) C_2H_5OH + 3O_2 \xrightarrow{t^o} 2CO_2 + 3H_2O\\ b)\\ (1)2CO + O_2 \xrightarrow{t^o} 2CO_2\\ (2)CO_2 + NaOH \to NaHCO_3\\ (3)2NaHCO_3 \xrightarrow{t^o} Na_2CO_3 + CO_2 + H_2O\\ (4) Na_2CO_3 + 2HCl \to 2NaCl +C O_2 + H_2O\\ (5) 2NaCl + 2H_2O \xrightarrow{điện\ phân\ dung\ dịch} 2NaOH + H_2+ Cl_2 \)
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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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Xem thêm câu trả lời
Viết PTHH thực hiện sơ đồ sau:
a) KMnO_4underrightarrow{left(1right)}O_2underrightarrow{left(2right)}SO_2underrightarrow{left(3right)}SO_3underrightarrow{left(4right)}H_2SO_4underrightarrow{left(5right)}Al_{2_{ }}left(SO_4right)_3
b) Caunderrightarrow{left(1right)}CaOunderrightarrow{left(2right)}Caleft(OHright)_2underrightarrow{left(3right)}CaCo_3underrightarrow{left(4right)}H_2
Cảm ơn ạ.
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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
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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??
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Viết PTHH theo sơ đồ:
\(CaC_2\underrightarrow{\left(1\right)}C_2H_2\underrightarrow{\left(2\right)}C_2H_4\underrightarrow{\left(3\right)}C_2H_5OH\underrightarrow{\left(4\right)}CH_3COOH\underrightarrow{\left(5\right)}CH_3COOC_2H_5\)
(1) CaC2 + 2H2O => C2H2 + Ca(OH)2
(2) C2H2 + H2 => (to,Pd) C2H4
(3) C2H4 + H2O => (to,H2SO4đ) C2H5OH
(4) C2H5OH + O2 => (men giấm) CH3COOH + H2O
(5) CH3COOH + C2H5OH => <pứ hai chiều> (xt:H2SO4đ, to) CH3COOC2H5 + H2O
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\(\left(1\right)CaC_2+2H_2O\rightarrow Ca\left(OH\right)_2+C_2H_2\)
\(\left(2\right)C_2H_2+H_2\xrightarrow[to]{Ni}C_2H_4\)
\(C_2H_4+2H_2O\xrightarrow[30-35^oC]{men.rượu}C_2H_5OH+H_2O\)
\(C_2H_5OH+O_2\xrightarrow[men.giấm]{30-35^oC}CH_3COOH+H_2O\)
\(C_2H_5OH+CH_3COOH\xrightarrow[\leftarrow]{H_2SO_4đ,t^o}CH_3COOC_2H_5+H_2O\)
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1) CaC2 + 2H2O -> Ca(OH)2 + C2H2
2) C2H2 + H2 -> C2H4 (đk: Ni ; to)
3)C2H4 + 2H2O --> C2H5OH (ĐK: to)
4) C2H5OH + O2 -> CH3COOH + H2O (ĐK: lên men)
5) CH3COOH + C2H5OH -> CH3COOC2H5 + H2O
(ĐK: H2SO4 đặc ; to)
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CHUỖI PHẢN ỨNGFeunderrightarrow{left(1right)}FeCl3underrightarrow{left(2right)}Fe(OH)3underrightarrow{left(3right)}Fe2O3underrightarrow{left(4right)}Fe(SO4)3Alunderrightarrow{left(1right)}AlCl3underrightarrow{left(text{2}right)}Al(NO3)3underrightarrow{left(text{3}right)}Al(OH)3underrightarrow{left(text{4}right)}Al2O3Alunderrightarrow{left(text{5}right)}Al2O3underrightarrow{left(text{6}right)}Alunderrightarrow{left(text{7}right)}Al(SO4)3underrightarrow{left(text{8}right)}AlCl3
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CHUỖI PHẢN ỨNG
Fe\(\underrightarrow{\left(1\right)}\)FeCl3\(\underrightarrow{\left(2\right)}\)Fe(OH)3\(\underrightarrow{\left(3\right)}\)Fe2O3\(\underrightarrow{\left(4\right)}\)Fe(SO4)3
Al\(\underrightarrow{\left(1\right)}\)AlCl3\(\underrightarrow{\left(\text{2}\right)}\)Al(NO3)3\(\underrightarrow{\left(\text{3}\right)}\)Al(OH)3\(\underrightarrow{\left(\text{4}\right)}\)Al2O3
Al\(\underrightarrow{\left(\text{5}\right)}\)Al2O3\(\underrightarrow{\left(\text{6}\right)}\)Al\(\underrightarrow{\left(\text{7}\right)}\)Al(SO4)3\(\underrightarrow{\left(\text{8}\right)}\)AlCl3
\(\left(1\right)2Fe+3Cl_2\xrightarrow[t^0]{}2FeCl_3\\ \left(2\right)FeCl_2+3NaOH\rightarrow Fe\left(OH\right)_3+3NaCl\\ \left(3\right)2Fe\left(OH\right)_3\xrightarrow[t^0]{}Fe_2O_3+3H_2O\\ \left(4\right)Fe_2O_3+3H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+3H_2O\)
____________
\(\left(1\right)2Al+3Cl_2\rightarrow2AlCl_3\\ \left(2\right)AlCl_3+3AgNO_3\rightarrow Al\left(NO_3\right)_3+3AgCl\\ \left(3\right)Al\left(NO_3\right)_3+3NaOH\rightarrow Al\left(OH\right)_3+3NaNO_3\\ \left(4\right)2Al\left(OH\right)_3\xrightarrow[t^0]{}Al_2O_3+3H_2O\\ \left(5\right)Al_2O_3+3CO\xrightarrow[]{t^0}2Al+3CO_2\\ \left(6\right)4Al+3O_2\xrightarrow[]{t^0}2Al_2O_3\\ \left(7\right)2Al+3H_2SO_4\xrightarrow[]{}Al_2\left(SO_4\right)_3+3H_2\\ \left(8\right)Al_2\left(SO_4\right)_3+3BaCl_2\rightarrow2AlCl_3+3BaSO_4\)
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Viết PTHH hoàn thành chuỗi chuyển hóa sau:
\(SO_2\underrightarrow{\left(1\right)}Na_2SO_3\underrightarrow{\left(2\right)}SO_2\underrightarrow{\left(3\right)}SO_3\underrightarrow{\left(4\right)}H_2SO_4\underrightarrow{\left(5\right)}CuSO_4\underrightarrow{\left(6\right)}FeSO_4\)
(1) \(2NaOH+SO2->Na2SO3+H2O\)
(2) \(Na2SO3+H2SO4->Na2SO4+SO2\uparrow+H2O\)
(3) \(SO3+H2O->H2SO4\)
(4) 2SO2 + \(O2\xrightarrow[V2O5]{t0}2SO3\)
(5) \(2H2SO4\left(đ,n\right)+Cu->CuSO4+SO2+2H2O\)
(6) \(Fe+CuSO4->FeSO4+Cu\)
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SGK Cánh diều - Trang 72
23 tháng 7 2023 lúc 12:52
Viết các phương trình hoá học theo các sơ đồ chuyển hoá sau:a) CuO underrightarrow{+?} CuSO4 underrightarrow{+?} Cu(OH)2 b) Mg underrightarrow{+?} MgCl2 underrightarrow{+?} Mg(OH)2c) NaOH underrightarrow{+?} Na2SO4 underrightarrow{+?} NaCl c) K2CO3 underrightarrow{+?} CaCO3 underrightarrow{+?} CaCl2
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Viết các phương trình hoá học theo các sơ đồ chuyển hoá sau:
a) CuO \(\underrightarrow{+?}\) CuSO4 \(\underrightarrow{+?}\) Cu(OH)2 b) Mg \(\underrightarrow{+?}\) MgCl2 \(\underrightarrow{+?}\) Mg(OH)2
c) NaOH \(\underrightarrow{+?}\) Na2SO4 \(\underrightarrow{+?}\) NaCl c) K2CO3 \(\underrightarrow{+?}\) CaCO3 \(\underrightarrow{+?}\) CaCl2
a
\(CuO+H_2SO_4\rightarrow CuSO_4+H_2O\\ CuSO_4+2NaOH\rightarrow Cu\left(OH\right)_2+Na_2SO_4\)
b
\(Mg+Cl_2\underrightarrow{t^o}MgCl_2\)
\(MgCl_2+2NaOH\rightarrow Mg\left(OH\right)_2+2NaCl\)
c
\(2NaOH+H_2SO_4\rightarrow Na_2SO_4+2H_2O\)
\(Na_2SO_4+BaCl_2\rightarrow BaSO_4+2NaCl\)
d
\(K_2CO_3+CaCl_2\rightarrow CaCO_3+2KCl\)
\(CaCO_3+2HCl\rightarrow CaCl_2+H_2O+CO_2\)
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