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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↓
1)(-C6H10O5-)n +nH2O -axit ;to-> nC6H12O6
2) C6H12O6 --men ; 30o-32oC--> 2C2H5OH + 2CO2
3) C2H5OH + 3O2 -to-> 2CO2 + 3H2O
4) CO2 + 2NaOH -> Na2CO3 + H2O
5) Na2CO3 + 2CH3COOH -> 2CH3COONa + H2O + CO2
6) 2C2H5OH + 2Na -> 2C2H5ONa + H2
7) C2H5OH + CH3COOH -> H2O + CH3COOC2H5
(đk: H2SO4 đ ; to)
(1) (C6H10O5)n + nH2O => nC6H12O6
(2) C6H12O6 => (men rượu, to) 2CO2 + 2C2H5OH
(3) C2H5OH + 3O2 => (to) 2CO2 + 3H2O
(4) CO2 + 2NaOH => Na2CO3 + H2O
(5) Na2CO3 + 2CH3COOH => 2CH3COONa + CO2 + H2O
(6) C2H5OH + Na => C2H5ONa + 1/2 H2
(7) C2H5OH + CH3COOH => (to,xt: H2SO4đ) <pứ hai chiều> CH3COOC2H5 + H2O
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
(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
\(\left(1\right)CaC_2+2H_2O\rightarrow Ca\left(OH\right)_2+C_2H_2\)
\(\left(2\right)C_2H_2+H_2\xrightarrow[to]{Ni}C_2H_4\)
\(C_2H_4+2H_2O\xrightarrow[30-35^oC]{men.rượu}C_2H_5OH+H_2O\)
\(C_2H_5OH+O_2\xrightarrow[men.giấm]{30-35^oC}CH_3COOH+H_2O\)
\(C_2H_5OH+CH_3COOH\xrightarrow[\leftarrow]{H_2SO_4đ,t^o}CH_3COOC_2H_5+H_2O\)
(1) 2Fe + 3Cl2 -t0-> 2FeCl3
(2) FeCl3 + 3NaOH - > Fe(OH)3\(\downarrow\) + 3NaCl
(3) \(2Fe\left(OH\right)3-^{t0}->Fe2O3+3H2O\)
(4) \(Fe2O3+3H2SO4->Fe2\left(SO4\right)3+3H2O\)
CaO+H2O--->Ca(OH)2
Ca(OH)2+ 2HCl--->CaCl2+2H2O
CaCl2+ MgCO3---->CaCO3+MgCl2
CaCO3+2HCl---->CaCl2+H2O+CO2
CaCl2+2NaOH---->Ca(OH)2+2NaCl
Ca(OH)2+CO2--->CaCO3+H2O
CaCO3---->CaO+CO2
a(1),fe+2hcl->fecl2+h2 (2) fecl2+ba(oh)2->fe(oh)2+bacl2 (3)fe(oh)2+h2so4->feso4+2h20 (4)feso4+bacl2->fecl2+baso4
b.(1)2fe+3cl2->2fecl3 (2)2fecl3+3ba(oh)2->2fe(oh)3+3bacl2 (3)2fe(oh)3+o2->fe2o3+h2o (4)fe2o3+3co->2fe+3co2
CaO+H2O---->Ca(OH)2
Pt2 ko ổn lw
Na2CO3+2HCl----->2NaCl+H2O+CO2
2NaCl+H2SO4---->Na2SO4+2HCl
Na2SO4+BaCl2---->2NaCl+BaSO4
2NaCl+2H2O---->Cl2+H2+2NaOH
NaOH+HCl----->NaCl+H2O
2NaCl+H2SO4---->Na2SO4+2HCl
Bài 1 :
\(\left(1\right)S+O_2-t^0->SO_2\)
\(\left(2\right)SO_2+H_2O-->H_2SO_3\)
\(\left(3\right)H_2SO_3+2NaOH-->Na_2SO_3+2H_2O\)
\(\left(4\right)Na_2SO_3+2HCl-->2NaCl+SO_2\uparrow+H_2O\)
Bài 2 :
\(\left(1\right)4P+5O_2-t^0->2P_2O_5\)
\(\left(2\right)P_2O_5+3H_2O-->2H_3PO_4\)
\(\left(3\right)3Na_2CO_3+2H_3PO_4-->2Na_3PO_4+3H_2O+3CO_2\uparrow\)
\(\left(4\right)CO_2+Ca\left(OH\right)_2-->CaCO_3\downarrow+H_2O\)
\(\left(5\right)CaCO_3+H_2SO_4-->CaSO_4+CO_2\uparrow+H_2O\)
C2H4+H2O → C2H5OH
C2H5OH+O2 \(\underrightarrow{^{\text{men giấm}}}\) CH3COOH+H2O
CH3COOH+NaOH → CH3COONa+H2O