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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)FeO + H_2SO_4 -> FeSO_4 + H_2O`
`(2)FeSO_4 + Ba(OH)_2 -> Fe(OH)_2 + BaSO_4`
`(3)Fe(OH)_2 -> (t^o, chân.không) FeO + H_2O`
`(4)FeO + 2HCl -> FeCl_2 + H_2O`
(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
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
\(a) C_2H_5OH + 3O_2 \xrightarrow{t^o} 2CO_2 + 3H_2O\\ b)\\ (1)2CO + O_2 \xrightarrow{t^o} 2CO_2\\ (2)CO_2 + NaOH \to NaHCO_3\\ (3)2NaHCO_3 \xrightarrow{t^o} Na_2CO_3 + CO_2 + H_2O\\ (4) Na_2CO_3 + 2HCl \to 2NaCl +C O_2 + H_2O\\ (5) 2NaCl + 2H_2O \xrightarrow{điện\ phân\ dung\ dịch} 2NaOH + H_2+ Cl_2 \)
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
(1) 2Na+2H2O--->2NaOH+H2
(2) 3NaOH+Al(NO3)3--->Al(OH)3+3NaNO3
(3) 2Al(OH)3--->Al2O3+3H2O
(4) 2Al2O3-đpnc---> 4Al+3O2
(5) 2Al+3H2SO4--->Al2(SO4)3+3H2
(6) Al2(SO4)3+3BaCl2--->3BaSO4+2AlCl3
\((1) CaC_2 + 2H_2O \to Ca(OH)_2 + C_2H_2\\ (2) C_2H_2 + H_2 \xrightarrow{t^o,PbCO_3} C_2H_4\\ (3) C_2H_4 + H_2O \xrightarrow{t^o,H^+} C_2H_5OH\\ (4) C_2H_5OH + O_2 \xrightarrow{men\ giấm} CH_3COOH + H_2O\\ (5) CH_3COOH + C_2H_5OH \buildrel{{H_2SO_4}}\over\rightleftharpoons CH_3COOC_2H_5 + H_2O\)
\(1\\ 2Al\left(OH\right)_3\rightarrow\left(t^o\right)Al_2O_3+3H_2O\\ 2\\ Al_2O_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\\ Al_2\left(SO_4\right)_3+3BaCl_2\rightarrow3BaSO_4+2AlCl_3\)
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