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\(Na_2O+H_2O\rightarrow2NaOH\\ 2NaOH+CO_2\rightarrow Na_2CO_3+H_2O\\ Na_2CO_3+2HCl\rightarrow2NaCl+CO_2+H_2O\\ CO_2+H_2O\rightarrow H_2CO_3\)
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(1) C + O 2 → t ° C O 2
(2) C O 2 + Ca OH 2 → CaC O 3 + H 2 O
(3) CaC O 3 → CaO + C O 2
(4) CaO + H 2 O → Ca OH 2
(5) Ca OH 2 + 2C O 2 → Ca HCO 3 2
![](https://rs.olm.vn/images/avt/0.png?1311)
(1) Fe 2 O 3 + 3 H 2 → 2Fe + 3 H 2 O
(2) 2Fe + 3 Cl 2 → 2Fe Cl 3
(3) Fe Cl 3 + 3NaOH → 3NaCl + Fe OH 3
(4) 2Fe OH 3 → Fe 2 O 3 + 3 H 2 O
(5) Fe + HCl → Fe Cl 2 + H 2
(6) Fe Cl 2 + 2NaOH → Fe OH 2 + 2NaCl
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\(C_2H_4+H_2O\underrightarrow{t^o,xt}C_2H_5OH\)
\(C_2H_5OH+O_2\underrightarrow{^{mengiam}}CH_3COOH+H_2O\)
\(CH_3COOH+C_2H_5OH⇌CH_3COOC_2H_5+H_2O\) (xt: H2SO4 đặc, to)
\(CH_3COOC_2H_5+NaOH\underrightarrow{t^o}CH_3COONa+C_2H_5OH\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Sửa đề: C2H3OH thành C2H5OH
\(C_2H_4+H_2O\overrightarrow{axit}C_2H_5OH\\ C_2H_5OH+O_2\underrightarrow{\text{men giấm}}CH_3COOH\\ C_2H_5OH+CH_3COOH\xrightarrow[H_2SO_4đặc]{t^o}CH_3COOC_2H_5+H_2O\)
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a.
\(1.2SO_2+O_2->2SO_3\)
\(2.H_2O+SO_3->H_2SO_4\)
\(3.CuO+H_2SO_4->CuSO_4+H_2O\)
\(4.Fe+CuSO_4->FeSO_4+Cu\)
\(5.FeSO_4+BaCl_2->BaSO_4+FeCl_2\)
a.
\(\left(1\right)2SO_2+O_2\xrightarrow[V_2O_5]{t^o}2SO_3\)
\(\left(2\right)SO_3+H_2O\xrightarrow[]{}H_2SO_4\)
\(\left(3\right)H_2SO_4+CuO\xrightarrow[]{}CuSO_4+H_2O\)
\(\left(4\right)Fe+CuSO_4\xrightarrow[]{}Cu\downarrow+FeSO_4\)
\(\left(5\right)FeSO_4+BaCl_2\xrightarrow[]{}BaSO_4\downarrow+FeCl_2\)
b.
\(\left(1\right)Fe_2O_3+3H_2SO_4\xrightarrow[]{}Fe_2\left(SO_4\right)_3+3H_2O\)
\(\left(2\right)Fe_2\left(SO_4\right)_3+6NaOH\xrightarrow[]{}2Fe\left(OH\right)_3+3Na_2SO_4\)
\(\left(3\right)Fe\left(OH\right)_3+3HCl\xrightarrow[]{}FeCl_3+3H_2O\)
\(\left(4\right)FeCl_3+3HNO_3\xrightarrow[]{}Fe\left(NO_3\right)_3+3HCl\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Câu 11 :
Trích mẫu thử
Cho dung dịch AgNO3/NH3 vào các mẫu thử
- mẫu thử tạo kết tủa trắng là glucozo
$C_6H_{12}O_6 + Ag_2O \xrightarrow{NH_3} 2Ag + C_6H_{12}O_7$
Cho Na vào hai mẫu thử còn :
- mẫu thử tạo khí không màu là ancol etylic
$2C_2H_5OH + 2Na \to 2C_2H_5ONa + H_2$
- mẫu thử không hiện tượng gì là benzen
Câu 12 :
a)
\((1) C_6H_{12}O_6 \xrightarrow{t^o,xt} 2CO_2 + 2C_2H_5OH\\ (2) C_2H_5OH + O_2 \xrightarrow{men\ giấm} CH_3COOH + H_2O\\ (3) CH_3COOH + C_2H_5OH \buildrel{{H_2SO_4,t^o}}\over\rightleftharpoons CH_3COOC_2H_5 + H_2O\\ (4) CH_3COOC_2H_5 + H_2O \buildrel{{H^+}}\over\rightleftharpoons CH_3COOH + C_2H_5OH\\ (5) CH_3COOH + NaOH \to CH_3COONa + H_2O\\ (6) CH_3COONa + NaOH \xrightarrow{t^o,CaO}CH_4 + Na_2CO_3 \)
b)
\((1) (-C_6H_{10}O_5-)_n + nH_2O \xrightarrow{t^o,xt} nC_6H_{12}O_6\\ (2) C_6H_{12}O_6 \xrightarrow{t^o,xt} 2CO_2 + 2H_2O+ 2C_2H_4\\ (3) nC_2H_4 \xrightarrow{t^o,xt,p} (-CH_2-CH_2-)_n\\ (5) 2CH_3COOH + LiAlH_4 + 2H_2O \xrightarrow{t^o}2C_2H_5OH + LiOH + Al(OH)_3\\ (6) C_2H_5OH + CH_3COOH \buildrel{{H_2SO_4,t^o}}\over\rightleftharpoons CH_3COOC_2H_5 + H_2O\)
a) (1) Fe + 2FeCl3 → 3FeCl2
(2) 3Ba(OH)2 + 2FeCl3 → 3BaCl2+ 2Fe(OH)3↓
(3) 2Fe(OH)3 + 3H2SO4 → Fe2(SO4)3 + 6H2O
(4) Fe2(SO4)3 + 3BaCl2 → 2FeCl3+ 3BaSO4↓
b) (1) 3NaOH+Fe(NO3)3→3NaNO3+Fe(OH)3↓
(2)2Fe(OH)3 t0 → Fe2O3+3H2O
(3)2Al + Fe2O3 → Al2O3+2Fe
(4)Fe + 2HCl→FeCl2+H2↑
(5) FeCl2 + 2NaOH → 2NaCl + Fe(OH)2