Bài 9/ Hoàn thành các PTHH sau: 1/ Na + O2 -> Na2O 2/ Na + H2O -> NaOH + H2 3/ P2O5 + H2O ->H3PO4 4/ Al2O3 + HCl ->AlCl3 + H2O 5/ Al + H2SO4 -> Al2(

Bài 9/ Hoàn thành các PTHH sau:
1/ Na + O2 -> Na2O
2/ Na + H2O -> NaOH + H2
3/ P2O5 + H2O ->H3PO4
4/ Al2O3 + HCl ->AlCl3 + H2O
5/ Al + H2SO4 -> Al2(SO4)3 + H2
6/ Zn + HCl ->ZnCl2 + H2
7/ Na2CO3 + HCl ->NaCl + CO2 + H2O
8/ Na2SO3 + H2SO4 -> Na2SO4 + SO2 + H2O
9/ CuSO4 + NaOH -> Cu(OH)2 + Na2SO4
10/ FeCl3 + KOH ->Fe(OH)3 + KCl
11/ BaCl2 + H2SO4 -> BaSO4 + HCl
12/ C12H22O11 -> C + H2O
13/ Fe(OH)3 -> Fe2O3 + H2O
14/ CaCO3 + HCl ->CaCl2 + CO2 + H2O
15/ CH4 + O2 -> CO2 + H2O
16/ Na2CO3 + Ca(OH)2 -> NaOH + CaCO3
17/ CaO + HNO3 ->Ca(NO3)2 + H2O
18/ Al + HCl -> AlCl3 + H2
19/ Al + CuSO4 -> Al2(SO4)3 + Cu
20/ FeO + HCl -> FeCl2 + H2

0 bình luận về “Bài 9/ Hoàn thành các PTHH sau: 1/ Na + O2 -> Na2O 2/ Na + H2O -> NaOH + H2 3/ P2O5 + H2O ->H3PO4 4/ Al2O3 + HCl ->AlCl3 + H2O 5/ Al + H2SO4 -> Al2(”

  1. Đáp án:

     

    Giải thích các bước giải:

    1/ 4Na + O2 -> 2Na2O

    2/ 2Na + 2H2O -> 2NaOH + H2

    3/ P2O5 + 3H2O ->2H3PO4

    4/ Al2O3 + 6HCl ->2AlCl3 + 3H2O

    5/ 2Al + 3H2SO4 -> Al2(SO4)3 + 3H2

    6/ Zn + 2HCl ->ZnCl2 + H2

    7/ Na2CO3 + 2HCl ->2NaCl + CO2 + H2O

    8/ Na2SO3 + H2SO4 -> Na2SO4 + SO2 + H2O

    9/ CuSO4 + 2NaOH -> Cu(OH)2 + Na2SO4

    10/ FeCl3 + 3KOH ->Fe(OH)3 + 3KCl

    11/ BaCl2 + H2SO4 -> BaSO4 + 2HCl

    12/ C12H22O11 -> 6C + 11H2O

    13/ 2Fe(OH)3 -> Fe2O3 + 3H2O

    14/ CaCO3 + 2HCl ->CaCl2 + CO2 + H2O

    15/ CH4 + 2O2 -> CO2 + 2H2O

    16/ Na2CO3 + Ca(OH)2 -> 2NaOH + CaCO3

    17/ CaO + 2HNO3 ->Ca(NO3)2 + H2O

    18/ 2Al + 6HCl -> 2AlCl3 + 3H2

    19/ 2Al + 3CuSO4 -> Al2(SO4)3 + 3Cu

    20/ FeO + 2HCl -> FeCl2 + H2

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  2. Đáp án:

    Ta có: 

    4Na + O2 -> 2Na2O

    2Na + 2H2O -> 2NaOH + H2 

    P2O5 + 3H2O ->2H3PO4 

    Al2O3 + 6HCl ->3AlCl3 + 3H2O

    2Al + 3H2SO4 -> Al2(SO4)3 +3H2

    Zn + 2HCl ->ZnCl2 + H2

    Na2CO3 + 2HCl ->2NaCl + CO2 + H2O

    Na2SO3 + H2SO4 -> Na2SO4 + SO2 + H2O

    CuSO4 + 2NaOH -> Cu(OH)2 + Na2SO4

    FeCl3 + 3KOH ->Fe(OH)3 + 3KCl

    BaCl2 + H2SO4 -> BaSO4 +2HCl

    C12H22O11 -> 12C + 11H2O

    2Fe(OH)3 -> Fe2O3 + 3H2O

    CaCO3 +2 HCl ->CaCl2 + CO2 + H2O

    CH4 + 2O2 -> CO2 + 2H2O

    Na2CO3 + Ca(OH)2 -> NaOH + CaCO3

    CaO + 2HNO3 ->Ca(NO3)2 + H2O

    2Al + 6HCl -> 2AlCl3 + 3H2

    2Al + 3CuSO4 -> Al2(SO4)3 + 3Cu

    FeO + 2HCl -> FeCl2 + H2

     

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