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\(a,\\ \left(1\right)Fe+Cu\left(NO_3\right)_2\rightarrow Fe\left(NO_3\right)_2+Cu\\ \left(2\right)Fe\left(NO_3\right)_2+2KOH\rightarrow Fe\left(OH\right)_2\downarrow+2KNO_3\\ \left(3\right)Fe\left(OH\right)_2+2HCl\rightarrow FeCl_2+2H_2O\)
\(\left(4\right)FeCl_2\) \(\rightarrow\left(đpdd\right)\) \(Fe+Cl_2\)
\(b,\\ \left(1\right)2Fe+3Cl_2\rightarrow\left(t^o\right)2FeCl_3\\ \left(2\right)FeCl_3+3AgNO_3\rightarrow Fe\left(NO_3\right)_3+3AgCl\downarrow\\ \left(3\right)Fe\left(NO_3\right)_3+3KOH\rightarrow Fe\left(OH\right)_3+3KNO_3\\ \left(4\right)2Fe\left(OH\right)_3+3H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+6H_2O\)
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
3Fe + 2O2 ➝ Fe3O4
Fe3O4 + 8HCl ➝ FeCl2 + 2FeCl3 + 4H2O
2FeCl2 + Cl2 ➝ 2FeCl3
FeCl3 + 3AgNO3 ➝ Fe(NO3)3 + 3AgCl↓
Fe(NO3)3 + 3NaOH ➝Fe(OH)3 + 3NaNO3
2Fe(OH)3 \(\underrightarrow{t^o}\) Fe2O3 + 3H2O
\(\text{Al2O3+6HCl->2AlCl3+3H2O}\)
\(\text{AlCl3+3AgNO3->3AgCl+Al(NO3)3}\)
\(\text{Al(NO3)3+3NaOH->Al(OH)3+3NaNO3}\)
\(\text{Al(OH)3+NaOH->NaAlO2+2H2O}\)
Al2O3+6HCl---->2AlCl3+3H2O
AlCl3+3AgNO3----->Al(NO3)3+3AgCl
Al(NO3)3+3NaOH---->3NaNO3+Al(OH)3
Al(OH)3+NaOH---->NaAlO2+2H2O
1, (1) 4Al+ 3O2--(to)---> 2Al2O3
(2) Al2O3+6HCl---> 2AlCl3+ 3H2O
(3) AlCl3+3NaOH---->Al(OH)3+ 3NaCl
(4) 2Al(OH)3---(to)---> Al2O3+ 3H2O
(5)2Al2O3---(to+ đpnc)--> 4Al+ 3O2
(6) 2Al+ 3Cl2---> 2AlCl3
2, (1)Fe+ CuSO4-->Cu+ FeSO4
(2) FeSO4+ 2NaOH--> Fe(OH)2+ Na2SO4
(3) Fe(OH)2 +2HCl---> FeCl2+ 2H2O
Bài cuối tự làm nhé!
1) Cu + 4HNO3 → Cu(NO3)2 + 2NO2 + 2H2O
2) Al + 4HNO3 → Al(NO3)3 + NO + 2H2O
3) Al + 6HNO3 → Al(NO3)3 + 3NO2 + 3H2O
4) 2Fe + 6H2SO4 → Fe2(SO4)3 + 3SO2 + 6H2O