Al —› Al₂O₃ —› Al₂(SO₄)₃ —› Al(OH)₃ —› AlCl₃.
1. 4Al + 3O₂ —› 2Al₂O₃.
2. Al₂O₃ + 3H₂SO₄ —› Al₂(SO₄)₃ + 3H₂O.
3. Al₂(SO₄)₃ + 6NaOH —› 2Al(OH)₃↓ + 3Na₂SO₄.
4. Al(OH)₃ + 3HCl —› AlCl₃ + 3H₂O.
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Al —› Al₂O₃ —› Al₂(SO₄)₃ —› Al(OH)₃ —› AlCl₃.
1. 4Al + 3O₂ —› 2Al₂O₃.
2. Al₂O₃ + 3H₂SO₄ —› Al₂(SO₄)₃ + 3H₂O.
3. Al₂(SO₄)₃ + 6NaOH —› 2Al(OH)₃↓ + 3Na₂SO₄.
4. Al(OH)₃ + 3HCl —› AlCl₃ + 3H₂O.