Question

[Huy Huy Anh]

al → al2o3 → al2(so4)3 → alcl3 → al(oh)3 → al(no3)3 → al → al2(so4)3 → al(oh)3 → al2o3 → al →naalo2

Answer 1

[Nguyễn Sỹ Tấn]

4Al+3O₂----t^o--->2Al₂O₃

Al₂O₃ +3H₂SO₄----->Al₂(SO₄)₃+3H₂O

Al₂(SO₄)₃+3BaCl₂------>2AlCl₃+3BaSO₄

2AlCl₃+3Ca(OH)₂---->2Al(OH)₃+3CaCl₂

Al(OH)₃+3HNO₃---->Al(NO₃)₃+3H₂O

2Al(NO₃)₃+3Mg----->3Mg(NO₃)₂+2Al

2Al+3H₂SO₄------->Al₂(SO₄)₃+3H₂

Al₂(SO₄)₃+3Ca(OH)₂------>2Al(OH)₃+3CaSO₄

2Al(OH)₃-----t^o----->Al₂O₃+3H₂O

2Al₂O₃----\(\dfrac{t^o}{criolit}\)---->4Al+3O₂

2Al+2H₂O+2NaOH------>2NaAlO₂+3H₂

Answer 2

[Kresol♪]

4Al+3O₂\(\underrightarrow{t^o}\) 2Al₂O₃

Al₂O₃+H₂SO₄ —> Al₂(SO₄)₃+3H₂O

Al₂(SO₄)₃+3BaCl₂–>3BaSO₄\(\downarrow\)+2AlCl₃

AlCl₃+3NaOH—>Al(OH)₃\(\downarrow\)+3NaCl

Al(OH)₃+HNO₃ —>Al(NO₃)₃+NO₂\(\uparrow\)+H₂O

2Al(NO₃)₃+3Mg—>3Mg(NO₃)₂+2Al\(\downarrow\)

2Al+3H₂SO₄–>Al₂(SO₄)₃+3H₂\(\uparrow\)

Al₂(SO₄)₃+6NaOH—>2Al(OH)₃+3Na₂SO₄

2Al(OH)₃\(\underrightarrow{t^o}\)Al₂O₃+3H₂O

2Al₂O₃\(\xrightarrow[criolit]{đien.phan.nong.chay}\)

4Al+3O₂

2Al+2NaOH+2H₂O—>2NaAlO₂+3H₂