a. FeS2 -> SO2 -> SO3 -> H2SO4. b. Al -> Al2O3 -> Al2(SO4)3 -> Al(OH)3 -> NaAlO2 -> Al(OH)3 -> AlCl3 -> Al(NO3)3. c. CaCO3 -> CaCl2 -> CaCO3 -> CaO -> Ca(OH)2 -> Ca(NO3)2. d. Cu -> CuO -> CuCl2 -> Cu(OH)2 -> CuO -> CuSO4 -> Cu. e. MgSO4 -> Mg(OH)2 -> MgO -> MgCl2 -> Mg(NO3)2 ->MgCO3 -> MgO. f. Fe -> Fe2(SO4)3 -> Fe(OH)3 -> Fe2O3 -> Fe -> FeCl2 -> Fe(OH)2 -> FeSO4 ->FeCl2 -> Fe(NO3)2 -> Fe.

1 câu trả lời

1)FeS2+O2=Fe2O3+SO2

2SO2+O2=2SO3

SO3+H2O=H2SO4

2)4Al+3O2=2Al2O3

Al2O3+3H2SO4=Al2(SO4)3+3H2O

Al2(SO4)3+3BaOH=Al(OH)3+3BaSO4

2NaAlO2+3H2O+CO2=Na2CO3+2Al(OH)3

Al(OH)3+3NaCl=AlCl3+3NaOH

AlCl3+3KNO3=Al(NO3)3+3KCl

3)CaCO3+2HCl=CaCl2+H2O+CO2

CaCl2+H2CO3=CaCO3+2HCl

CaCO3-nhiệt phân>CaO+CO2

CaO+H2O=Ca(OH)2

Ca(OH)2+Ba(NO3)2=Ba(OH)2+Ca(NO3)2

4)Cu+O2=CuO

CuO+2HCl=CuCl2+H2O

CuCl2+2H2O=Cu(OH)2+2HCl

Cu(OH)2+K2O=CuO+2KOH

CuO+H2SO4=CuSO4+H2O

CuSO4+Ba(chọn 1 kl bất kì mạnh hơn đồng để thực hiện phản ứng thế)=Cu+BaSO4

5)MgSO4+H2O=Mg(OH)2+H2SO4

Mg(OH)2+BaO=MgO+Ba(OH)2

MgO+2HCl=MgCl2+H2O

MgCl2+Ba(NO3)2=Mg(NO3)2+BaCl2

Mg(NO3)2+H2CO3=MgCO3+2HNO3

MgCO3+BaO=MgO+BaCO3

6)Fe+H2SO4=Fe2(SO4)3

Fe2(SO4)3+6H2O=2Fe(OH)3+3H2SO4

2Fe(OH)3+3Ba=3Ba(OH)2+2Fe

Fe+2HCl=FeCl2+H2

FeCl2+2H2O=Fe(OH)2+2HCl

Fe(OH)2+BaSO4=Ba(OH)2+FeSO4

FeSO4+2NaCl=FeCl2+Na2SO4

FeCl2+2KNO3=Fe(NO3)2+2KCl

Fe(NO3)2+Ba=Ba(NO3)2+Fe

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