Question

Cân bằng các phương trinh hóa học: 

1. Al + H₂SO₄  -----> Al₂ ( SO₄ )₃ + H₂

2. Cu ( OH )₃ + HCl -----> CuCl₂ + H₂O 

3. Fe ( OH )₃ + H₂SO₄ -----> Fe₂ ( SO₄ )₃ + H₂O 

4.Al ( OH )₃ + HCl -----> Al Cl₃ + H₂O 

5.Fe SO₄ + KOH -----> K₂ SO₄ + Fe ( OH )₂

6.Na₂ CO₃ + HCl -----> NaCl + CO₂ + H₂O

7.Al₂ ( SO₄ )₃ + NaOH -----> Na₂SO₄ + Al ( OH )₃

 

Answer 1

1.  2Al + 3H₂SO₄  \(\rightarrow\)  Al₂ ( SO₄ )₃ + 3H₂

2.   Cu ( OH )₂ + 2HCl  \(\rightarrow\)  CuCl₂ + 2H₂O 

3.  2Fe ( OH )₃ + 3H₂SO_{4  \(\rightarrow\)}  Fe₂ ( SO₄ )₃ + 6H₂O 

4.  Al ( OH )₃ + HCl  \(\rightarrow\) Al Cl₃ + 2H₂O 

5.  Fe SO₄ + 2KOH \(\rightarrow\) K₂ SO₄ + Fe ( OH )₂

6. Na₂ CO₃ + 2HCl  \(\rightarrow\)  2NaCl + CO₂ + H₂O

 

7. Al₂ ( SO₄ )₃ + 6NaOH \(\rightarrow\)  3Na₂SO₄ + 2 Al ( OH )₃

 

Answer 2

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Answer 3

1. \(2Al+3H_2SO_{4_{ }}-->Al_{_{ }2}\left(SO_4\right)_3+3H_2\)

2. Cu(OH)3+2HCl----> 2CuCl2+H2O

3. 2Fe(OH)3+3HCl-----> CuCl₂+6H₂O

4. Al(OH)3+3HCl---> AlCl3+3H2O

5. FeSO4+2KOH------> K2SO4+Fe(OH)2

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

7. Al2(SO4)3 +6NaOH----> 3Na2SO4+2Al(OH)3

Answer 4

2Al+3H2SO4→Al2(SO4)3+3H2

Cu(OH)2+2HCl→2H2O+CuCl2

3H2SO4+2Fe(OH)3→Fe2(SO4)3+6H2O

Al(OH)3+3HCl→AlCl3+3H2O

2KOH+FeSO4→K2SO4+Fe(OH)2

2HCl+Na2CO3→H2O+2NaCl+CO2

Al2(SO4)3+6NaOH→2Al(OH)3+3Na2SO4

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