Question

[Trần T Minh Anh]

Viết PTHH thực hiện chuỗi phản ứng sau:

a) Al -> Al2O3 -> Al(NO3)3 -> Al(OH)3 -> Al2O3 -> AlCl3 -> Al

b) Fe -> FeCl3 -> Fe(OH)3 -> Fe2O3 -> Fe -> FeCl2 -> Fe(NO3)2

c) Mg -> MgO -> MgCl2 -> Mg(OH)2 -> MgSO4 -> MgCl2

d) Cu(OH)2 -> CuO -> CuSO4 -> CuCl2 -> Cu(NO3)2 -> Cu -> CuO

e) Na -> Na2O -> NaOH -> NaCO3 -> Na2SO4 -> NaCl -> NaNO3

f) Fe3O4 -> Fe -> FeCl3 -> Fe(NO3)3 -> Fe(OH)3

Answer 1

[B.Thị Anh Thơ]

a)

4Al + 3O2\(\rightarrow\) 2Al2O3

Al2O3 +6HNO3\(\rightarrow\) 2Al(NO3)3 + 3H2O

Al(NO3)3 + 3NaOH \(\rightarrow\)Al(OH)3 + 3NaNO3

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

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

AlCl3 không điện phân nóng chảy được \(\rightarrow\) Al2O3 \(\underrightarrow{^{\text{đpnc}}}\)2Al + \(\frac{3}{2}\)O2

b) 2Fe + 3Cl2 \(\rightarrow\) 2FeCl3

FeCl3 + 3NaOH \(\rightarrow\)Fe(OH)3 + 3NaCl

2Fe(OH)3\(\rightarrow\)Fe2O3 + 3H2O

Fe2O3 + 3CO \(\rightarrow\)2Fe + 3CO2

Fe + 2HCl\(\rightarrow\) FeCl2 + 2

FeCl2 + 2AgNO3\(\rightarrow\)Fe(NO3)2 + 2AgCl (thường ra Fe⁺³ )

c) 2Mg + O2\(\rightarrow\)2MgO

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

MgCl2 + 2NaOH \(\rightarrow\) Mg(OH)2 + 2NaCl

Mg(OH)2 + H2SO4 \(\rightarrow\)MgSO4 + 2H2O

MgSO4 + BaCl2 \(\rightarrow\) MgCl2 + BaSO4

d) Cu(OH)2\(\underrightarrow{^{to}}\) CuO + H2O

CuO + H2SO4\(\rightarrow\)CuSo4 + H2O

CuSO4 + BaCl2 \(\rightarrow\) BaSO4 + CuCl2

CuCl2 + 2AgNO3 \(\rightarrow\) Cu(NO3)2 + 2AgCl

Fe + Cu(NO3)2\(\rightarrow\) Fe(NO3)2 + Cu

Cu + \(\frac{1}{2}\)O2 \(\rightarrow\) CuO

e) 4Na + O2\(\rightarrow\) 2Na2O

Na2O + H2O \(\rightarrow\) 2NaOH

2NaOH + CO2 \(\rightarrow\)Na2CO3 + H2O

Na2CO3 + H2SO4\(\rightarrow\) Na2SO4 + CO2 + H2O

Na2SO4 + BaCl2 \(\rightarrow\)BaSO4 + 2NaCl

NaCl + AgNO3\(\rightarrow\) AgCl + NaNO3

f) Fe3O4 + 4CO\(\rightarrow\) 3Fe + 4CO2

2Fe + 3Cl2 \(\rightarrow\)2FeCl3

FeCl3 + 3AgNO3 \(\rightarrow\) Fe(NO3)3 +3AgCl

Fe(NO3)3 + 3NaOH \(\rightarrow\) Fe(OH)3 + 3NaNO3

Lần sau đăng tách riêng ra nhé

Nhìn rối mắt lắm

Answer 2

[duyen ngoc]

a) Al -> Al₂O₃-> Al(NO₃)₃-> Al(OH)₃ -> Al₂O₃ -> AlCl₃ -> Al

(1) 2A1 + O₂ Al₂O₃

(2) Al₂O₃ + 6HCl → 2AlCl₃ + 3H₂O

(3) Al(NO₃)₃ + 3NaOH (vừa đủ) → 3NaNO₃ + Al (OH)₃

(4) 2Al(OH)₃ Al₂O₃+ ЗН₂О

(5) 2Al₂O₃ 4Al + 3O₂

(6) 2Al + 3Cl₂ 2AlCl₃

b) Fe -> FeCl₃ -> Fe(OH)₃ -> Fe₂O₃-> Fe -> FeCl₂ -> Fe(NO₃)₃

(1) 2Fe + 3Cl₂ → 2FeCl₃

(2) FeCl₃ + 3NaOH → 3NaCl + Fe(OH)₃

(3) 2Fe(OH)₃ → Fe₂O₃ + 3H₂O

(4) Fe₂O₃ + H₂→ Fe + H₂O

(5) 3Fe + 2HCl → 2FeCl₂ +H_2↑

(6) Fe(NO₃)₃+3NaOH ➞Fe(OH)₃ +3Na(NO₃)

dài wá mình trả lời những câu còn lại sau : thông cảm cho mk nha❗❕