Question

Cân bằng các phương trình sau:

1. Al + Cl₂ \(\rightarrow\)_____

2. Na + O_{2 ^{\(\rightarrow\)_________}}

3. NaOH + CuSO₄ \(\rightarrow\) Cu(OH)₂ \(\downarrow\) +_____

4. Zn + HCl \(\rightarrow\) _____+ H₂\(\uparrow\)

5.K + H₂O \(\rightarrow\) KOH + H_{2^\(\uparrow\)}

Answer 1

1. 2Al + 3Cl2 →___2AlCl3__

2. 4Na + O2 →_____2Na2O____

3. 2NaOH + CuSO4 → Cu(OH)2 ↓ +_Na2(SO4)____

4. Zn + 2HCl → __ZnCl₂___+ H2↑

5.K₂ +2 H2O → 2KOH + H2↑

Answer 2

1. 2Al + 3Cl₂ \(\rightarrow\) 2AlCl₃

2. 4Na + O2 → 2Na₂O

3. 2NaOH + CuSO4 → Cu(OH)2 ↓ + Na₂SO₄

4. Zn + 2HCl → ZnCl₂+ H2↑

5.2K + 2H2O → 2KOH + H2↑

Answer 3

1.\(2Al+3Cl_2\rightarrow2AlCl_3\)

2.\(4Na+O_2\rightarrow2Na_2O\)

3.2NaOH+CuSO₄->Cu(OH)₂+Na₂SO4

4.Zn+2HCl-> ZnCl₂+H₂

5.K₂+2H₂O->2KOH+H₂