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222-9+11+12:2*14+14 = ? ( )

Hóa học Lớp 9: 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 ->

Hóa học Lớp 9: 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., giúp em giải bài hóa này ạ, em cảm ơn thầy cô và các bạn nhiều.

Comments ( 1 )

  1. 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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222-9+11+12:2*14+14 = ? ( )

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