Question

[võ thị thanh tâm]

Thực hiện dãy chuyển hóa

a. KClO₃ -> (A) -> SO₂ -> (B) -> H₂SO₄

b. KMnO₄ -> O₂ -> CuO -> H₂O -> NaOH

c. Fe -> Fe₃O₄ -> H₂O -> H₂ -> Pb

d. KClO₃ -> O₂ -> PbO -> H₂O -> KOH

e. H₂O -> O₂ ->ZnO -> H₂O -> H₃PO₄

g. S -> SO₂ -> SO₃ -> H₂SO₄ -> MgSO₄

h. Na -> H₂ -> H₂O -> Ca(OH)₂ -> CaCO₃

Answer 1

[muốn đặt tên nhưng chưa nghĩ ra bạn...]

a) A là O₂; B là SO₃

2KClO₃\(\xrightarrow[]{to}\) 2KCl+ 3O₂

S+O₂\(\xrightarrow[]{to}\) SO₂

2SO₂+ O₂\(\xrightarrow[]{to}\) 2SO₃

SO₃+ H₂O\(\xrightarrow[]{}\) H₂SO₄

b) 2KMnO₄\(\underrightarrow{to}\) K₂MnO₄+ MnO₂+ O₂

2Cu+ O₂\(\xrightarrow[]{to}\) 2CuO

CuO+ H₂\(\xrightarrow[]{to}\) Cu+ H₂O

2Na+ 2H₂O\(\xrightarrow[]{}\) 2NaOH+ H₂

c) 3Fe+ 2O₂\(\xrightarrow[]{to}\) Fe₃O₄

Fe₃O₄+ 4H₂\(\xrightarrow[]{to}\) 3Fe+ 4H₂O

2H₂O\(\xrightarrow[]{đp}\) 2H₂+ O₂

PbO+ H₂\(\xrightarrow[]{to}\) Pb+ H₂O

d) 2KClO₃\(\xrightarrow[]{to}\) 2KCl+ 3O₂

2Pb+ O₂\(\xrightarrow[]{to}\) 2PbO

PbO+ H₂\(\xrightarrow[]{to}\) Pb+ H₂O

2K+ 2H₂O\(\xrightarrow[]{}\) 2KOH+ H₂

Answer 2

[muốn đặt tên nhưng chưa nghĩ ra bạn...]

e) 2H₂O\(\xrightarrow[]{đp}\) 2H₂+ O₂

2Zn+ O₂\(\xrightarrow[]{to}\) 2ZnO

ZnO+ H₂\(\xrightarrow[]{to}\) Zn+ H₂O

P₂O₅+ 3H₂O\(\xrightarrow[]{}\) 2H₃PO₄

g) S+ O₂\(\xrightarrow[]{to}\) SO₂

2SO₂+ O₂\(\xrightarrow[]{to}\) 2SO₃

SO₃+ H₂O\(\xrightarrow[]{}\) H₂SO₄

Mg+ H₂SO₄\(\xrightarrow[]{}\) MgSO₄+ H₂

h) 2Na+ 2H₂O\(\xrightarrow[]{}\) 2NaOH+ H₂

2H₂+ O₂\(\xrightarrow[]{to}\) 2H₂O

CaO+ H₂O\(\xrightarrow[]{}\) Ca(OH)₂

Ca(OH)₂+ CO₂\(\xrightarrow[]{}\) CaCO₃+ H₂O