Question

Hoan thành PTHH sau ( cân bằng)

1) Na₂+H₂O ->

2) SO₂ + H₂O ->

3)SO_{2 +} CaO ->

4) Fe₂O_{3 +}HCl ->

5) CO₂ + Ba(OH)₂ ->

6) ZnO + H₂SO₄ ->

7) H₂O + ...... -> Ca(OH)₂

8) H₂O + ..... -> H₂CO₃

9)CaO + ....... -> CaCO₃

10).... +HCl -> AlCl3 +H₂O

Answer 1

1)2 Na +2H2O---->2NaOH+H2

2)SO2+H2O------->H2SO3

3)SO2+CaO---->CaSO3

4)Fe2O3+6HCl--->2FeCl2_+3H20

5)CO2+Ba(OH)2----->BaCO3+H2O

6)ZnO+h2SO4--->ZnSO4+H2O

7) H20+CaO---->Ca(OH)2

8)H2O+CO2---->H2CO3

9)CaO+CO2--->CaCO3

10) Al2O3 +6HCl--->2AlCl3+3H2O

Chúc bạn học tốt

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Answer 2

PT 1 sai rồi bạn à ko có chất nào là Na2 đâu

Answer 3

Answer 4

Na₂O+ H₂O\(\rightarrow\) 2NaOH

SO₂+ H₂O\(\rightarrow\) H₂SO₃

SO₂+ CaO\(\rightarrow\) CaSO₃

Fe₂O₃+ 6HCl\(\rightarrow\) 2FeCl₃+ 3H₂O

CO₂+ Ba(OH)₂\(\rightarrow\) BaCO₃\(\downarrow\)+ H₂O

[ 2CO₂+ Ba(OH)₂\(\rightarrow\) Ba(HCO₃)₂]

ZnO+ H₂SO₄\(\rightarrow\) ZnSO₄+ H₂O

CaO+ H₂O\(\rightarrow\) Ca(OH)₂

CO₂+ H₂O\(⇌\) H₂CO₃

CaO+ CO₂\(\rightarrow\) CaCO₃

Al₂O₃+ 6HCl\(\rightarrow\) 2AlCl₃+ 3H₂O

Answer 5

1) Na₂O + H₂O➝2NaOH

2) SO₂ + H₂O➝H₂SO₃

3) SO₂ + CaO➝CaSO₃

4)Fe₂O₃ + 6HCl➝2FeCl₃ + 3H₂O

5)CO₂ + Ba(OH)₂➝BaCO₃ +H₂O

6) ZnO +H₂SO₄ ➝ ZnSO₄+H₂O

7)H₂O + CaO ➝ Ca(OH)₂

8) H₂O + CO₂ ➝ H₂CO₃

9)CaO+ CO₂ ➝ CaCO₃

10) Al₂O₃ + 6HCl➝2AlCl₃ + 3H₂O

Answer 6

1) Na2O + H2O ➝ 2NaOH

2) SO2 + H2O ➝ H2SO3

3) SO2 + CaO ➝CaSO3 (to)

4) Fe2O3 + 6HCl ➝ 2FeCl3 + 3H2O

5) CO2 + Ba(OH)2 ➝ BaCO3\(\downarrow\) + H2O

6) ZnO + H2SO4 ➝ ZnSO4 + H2O

7) H2O + CaO ➝ Ca(OH)2

8) H2O + CO2 ➝ H2CO3

9) CaO+ CO2 ➝ CaCO3 (to)

10) Al2O3 + 6HCl ➝ 2AlCl3 + 3H2O

Answer 7

1. 2Na + 2H₂O ---> 2NaOH + H₂

2. SO₂ + H₂O ---> H₂SO₃

3. SO₂ + CaO --> CaSO₃

4. Fe₂O₃ + 6HCl --> 2FeCl₂ + 3H₂O

5. CO₂ + Ba(OH)₂ --> BaCO₃ + H₂O

6.ZnO + H₂SO₄ --> ZnSO₄ + H₂O

7.H₂O + CaO --> Ca(OH)₂

8. H₂O + CO₂ --> H₂CO₃

9.CaO + CO₂ ---> CaCO₃

10 Al₂O₃ + 6HCl --> 2AlCl₃ + 3H₂O

Answer 8

1) 2Na2+2H2O ->2NaOH+H2

2) SO2 + H2O ->H2SO3

3)SO2 + CaO ->CaSO3

4) Fe2O3 +6HCL->2FeCl3+3H2O

5) CO2 + Ba(OH)2 ->BaCO3+H2O

6) ZnO + H2SO4 ->ZnSO4+ H2O

7) H2O + CaO->Ca(OH)2

8) H2O +CO2-> H2CO3

9)CaO +CO2 -> CaCO3

10)Al2O3+6HCl->2AlCl3+3H2O

Answer 9

1. 2Na + 2H2O \(\rightarrow\) 2NaOH + H2

2. SO2 + H2O \(\rightarrow\) H2SO3

3. SO2 + CaO \(\rightarrow\) CaSO3

4. Fe2O3 + 6HCl \(\rightarrow\) 2FeCl2 + 3H2O

5. CO2 + Ba(OH)2 \(\rightarrow\) BaCO3 + H2O

6.ZnO + H2SO4 \(\rightarrow\) ZnSO4 + H2O

7.H2O + CaO \(\rightarrow\) Ca(OH)2

8. H2O + CO2 \(\rightarrow\) H2CO3

9.CaO + CO2 \(\rightarrow\) CaCO3

10 Al2O3 + 6HCl \(\rightarrow\) 2AlCl3 + 3H2O

Answer 10

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