Question

Cho các ôxit sau:

Li₂O , Na₂O, K₂O , CaO , MgO , Al₂O₃ , FeO , Fe₂O₃ , CuO , ZnO , CO₂ , SO₂ , SO₃ , P₂O₅.

Viết các phương trình phản ứng nếu có khi cho các ôxit trên tác dụng với :

1. H₂O 2. KOH 3. Ba(OH)₂ 4. Ca(OH)₂ 5. HCl 6. H₂SO₄ (loãng)

Answer 1

1. H₂O

Li₂O + H₂O \(\rightarrow\) 2LiOH

Na₂O + H₂O \(\rightarrow\) 2NaOH

K₂O + H₂O \(\rightarrow\) 2KOH

CaO + H₂O \(\rightarrow\) Ca(OH)₂

CO₂ + H₂O \(\rightarrow\) H₂CO₃

SO₂ + H₂O \(\rightarrow\) H₂SO₃

SO₃ + H₂O \(\rightarrow\) H₂SO₄

P₂O₅ + 3H₂O \(\rightarrow\) 2H₃PO₄

Answer 2

2. KOH

Al₂O₃ + 2KOH \(\rightarrow\) 2KAlO₂ + H₂O

CO₂ + 2KOH \(\rightarrow\) K₂CO₃ + H₂O

CO₂ + KOH \(\rightarrow\) KHCO₃

SO₂ + 2KOH \(\rightarrow\) K₂SO₃ + H₂O

SO₂ + KOH \(\rightarrow\)KHSO₃

SO₃ + 2KOH \(\rightarrow\) K₂SO₄ + H₂O

P₂O₅ + 6KOH \(\rightarrow\) 2K₃PO₄ + 3H₂O

Answer 3

2.

Al₂O₃ + 2KOH \(\rightarrow\) 2KAlO₂ + H₂O

ZnO + 2KOH \(\rightarrow\) K₂ZnO₂ + H₂O

CO₂ + 2KOH \(\rightarrow\) K₂CO₃ + H₂O

CO₂ + KOH \(\rightarrow\) KHCO₃

SO₂ + 2KOH \(\rightarrow\) K₂SO₃ + H₂O

SO₂ + KOH \(\rightarrow\) KHSO₃

SO₃ + KOH \(\rightarrow\) K₂SO₄

P₂O₅ + 6KOH \(\rightarrow\) 2K₃PO₄ + 3H₂O

Answer 4

3. Ba(OH)₂

Al₂O₃ + Ba(OH)₂ \(\rightarrow\) Ba(AlO₂)₂ + H₂O

ZnO + Ba(OH)₂ \(\rightarrow\) BaZnO₂ + H₂O

Ba(OH)₂ + CO₂ \(\rightarrow\) BaCO₃ + H₂O

2CO₂ + Ba(OH)₂ \(\rightarrow\) Ba(HCO₃)₂

SO₂ + Ba(OH)₂ \(\rightarrow\) BaSO₃ + H₂O

2SO₂ + Ba(OH)₂ \(\rightarrow\) Ba(HSO₃)₂

SO₃ + Ba(OH)₂ \(\rightarrow\) BaSO₄ + H₂O

P₂O₅ + 3Ba(OH)₂ \(\rightarrow\) Ba₃(PO₄)₂ + 3H₂O

Answer 5

4. Ca(OH)₂

Al₂O₃ + Ca(OH)₂ \(\rightarrow\) Ca(AlO₂)₂ + H₂O

ZnO + Ca(OH)₂ \(\rightarrow\) CaZnO₂ + H₂O

CO₂ + Ca(OH)₂ \(\rightarrow\) CaCO₃ + H₂O

2CO₂ + Ca(OH)₂ \(\rightarrow\) Ca(HCO₃)₂

SO₂ + Ca(OH)₂ \(\rightarrow\) CaSO₃ + H₂O

2SO₂ + Ca(OH)₂ \(\rightarrow\) Ca(HSO₃)₂

SO₃ + Ca(OH)₂ \(\rightarrow\) CaSO₄ + H₂O

P₂O₅ + 3Ca(OH)₂ \(\rightarrow\) Ca₃(PO₄)₂ + 3H₂O

Answer 6

5. HCl

Li₂O + 2HCl \(\rightarrow\) 2LiCl + H₂O

Na₂O + 2HCl \(\rightarrow\) 2NaCl + H₂O

K₂O + 2HCl \(\rightarrow\) 2KCl + H₂O

CaO + 2HCl \(\rightarrow\) CaCl₂ + H₂O

MgO + 2HCl \(\rightarrow\) MgCl₂ + H₂O

Al₂O₃ + 6HCl \(\rightarrow\) 2AlCl₃ + 3H₂O

FeO + 2HCl \(\rightarrow\) FeCl₂ + H₂O

Fe₂O₃ + 6HCl \(\rightarrow\) 2FeCl₃ + 3H₂O

CuO + 2HCl \(\rightarrow\) CuCl₂ + H₂O

ZnO + 2HCl \(\rightarrow\) ZnCl₂ + H₂O

Answer 7

6. H₂SO₄ loãng

Li₂O + H₂SO₄ \(\rightarrow\) Li₂SO₄ + H₂O

Na₂O + H₂SO₄ \(\rightarrow\) Na₂SO₄ + H₂O

K₂O + H₂SO₄ \(\rightarrow\) K₂SO₄ + H₂O

CaO + H₂SO₄ \(\rightarrow\) CaSO₄ + H₂O

MgO + H₂SO₄ \(\rightarrow\) MgSO₄ + H₂O

Al₂O₃ + 3H₂SO₄ \(\rightarrow\) Al₂(SO₄)₃ + 3H₂O

FeO + H₂SO₄ \(\rightarrow\) FeSO₄ + H₂O

Fe₂O₃ + 3H₂SO₄ \(\rightarrow\) Fe₂(SO₄)₃ + 3H₂O

CuO + H₂SO₄ \(\rightarrow\) CuSO₄ + H₂O

ZnO + H₂SO₄ \(\rightarrow\) ZnSO₄ + H₂O