Question

Cân bằng phương trình:

1. K + O₂ -> K₂O

2. N₂ + H₂ -> NH₃

3. KOH + CuSO₄ -> K₂SO₄ + Cu(OH)₂

4. Al₂O₃ + H₂SO₄ -> Al₂(SO₄)₃ + H₂O

5. Na₂SO₄ + BaCl₂ -> NaCl + BaSO₄

Answer 1

1) \(4K+O_2\rightarrow2K_2O\)

2) \(N_2+3H_2\rightarrow2NH_3\)

3) \(2KOH+CuSO_4\rightarrow K_2SO_4+Cu\left(OH\right)_2\)

4) \(Al_2O_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)

5) \(Na_2SO_4+BaCl_2\rightarrow2NaCl+BaSO_4\)