Ответ:
a) 1. 2Fe + 6HCl = 2FeCl₃ + 3H₂
2. 2FeCl₃ + 3H₂SO₄ = Fe₂(SO₄)₃ + 6HCl
3. Fe₂(SO₄)₃ + 6HNO₃ = 2Fe(NO₃)₃ + 3H₂SO₄
4. 4Fe(NO₃)₂ = 2Fe₂O₃ + 12NO₂ + 3O₂
5. Fe₂O₃ + 3SO₃ = Fe₂(SO₄)₃
б) 1. 2Cu + O₂ = 2CuO
2. CuO + H₂O = 2Cu(OH)₂
3. Cu(OH)₂ + H₂SO₄ = CuSO₄ + 2H₂O
4. CuSO₄ + Zn(OH)₂ = Cu(OH)₂ + ZnSO₄
5. Cu(OH)₂ = CuO + H₂O
6. 2CuO = 2Cu + O₂
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Ответ:
a) 1. 2Fe + 6HCl = 2FeCl₃ + 3H₂
2. 2FeCl₃ + 3H₂SO₄ = Fe₂(SO₄)₃ + 6HCl
3. Fe₂(SO₄)₃ + 6HNO₃ = 2Fe(NO₃)₃ + 3H₂SO₄
4. 4Fe(NO₃)₂ = 2Fe₂O₃ + 12NO₂ + 3O₂
5. Fe₂O₃ + 3SO₃ = Fe₂(SO₄)₃
б) 1. 2Cu + O₂ = 2CuO
2. CuO + H₂O = 2Cu(OH)₂
3. Cu(OH)₂ + H₂SO₄ = CuSO₄ + 2H₂O
4. CuSO₄ + Zn(OH)₂ = Cu(OH)₂ + ZnSO₄
5. Cu(OH)₂ = CuO + H₂O
6. 2CuO = 2Cu + O₂