\(2NaOH+Cl_2\rightarrow NaCl+NaClO+H_2O\)

\(H_2S+4Br_2+4H_2O\rightarrow8HBr+H_2SO_4\)

\(NaCl+AgNO_3\rightarrow AgCl+NaNO_3\)

$2NaOH + Cl_2 \to NaCl + NaClO + H_2O$

$H_2S + 4Br_2 + 4H_2O \to 8HBr + H_2SO_4$

$NaCl + AgNO_3 \to AgCl + NaNO_3$

a) \(N_2+O_2\rightarrow2NO\)

\(\begin{matrix}N^0\rightarrow N^{+2}+2e\\O^0+2e\rightarrow O^{-2}\end{matrix}|\begin{matrix}\times1\\\times1\end{matrix}\)

b) \(C_2H_5OH+3O_2\rightarrow2CO_2+3H_2O\)

\(\begin{matrix}C^{-2}\rightarrow C^{+4}+6e\\O^0+2e\rightarrow O^{-2}\end{matrix}|\begin{matrix}\times1\\\times3\end{matrix}\)

c) \(CH_4+2O_2\rightarrow CO_2+2H_2O\)

\(\begin{matrix}C^{-4}\rightarrow C^{+4}+8e\\O^0+2e\rightarrow O^{-2}\end{matrix}|\begin{matrix}\times1\\\times4\end{matrix}\)

d) \(2H_2S+3O_2\rightarrow2H_2O+2SO_2\)

\(\begin{matrix}S^{-2}\rightarrow S^{+4}+6e\\O^0+2e\rightarrow O^{-2}\end{matrix}|\begin{matrix}\times1\\\times3\end{matrix}\)

e) \(4NH_3+3O_2\rightarrow2N_2+6H_2O\)

\(\begin{matrix}N^{-3}\rightarrow N^0+3e\\O^0+2e\rightarrow O^{-2}\end{matrix}|\begin{matrix}\times2\\\times3\end{matrix}\)

a)N2+O2->2NO

b)C2H5OH+3O2->2CO2+3H2O

c)CH4+2O2->CO2+2H2O

d)H2S+3/2O2->H2O+SO2 / 2H2S+3O2->2H2O+2SO2

e)2NH3+3/2O2->N2+3H2O / 4NH3+3O2->2N2+6H2O

CHÚC BN HỌC TỐT :))))

1) FeCl₂ + 2NaOH \(\rightarrow\) Fe(OH)₂ + 2NaCl

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

3) 4NH₃ + 3O₂ \(\rightarrow\) 2N₂ + 6H₂O

4) Na₂SO₃ + 2HCl \(\rightarrow\) 2NaCl + SO₂ + H₂O (Bạn chép sai đề nhé!)

5) 2H₂S + 3O₂ \(\rightarrow\) 2SO₂ + 2H₂O

1) FeCl₂ + 2NaOH -Dung môi trong môi trường N2-> Fe(OH)₃ + 2NaCl

2) 2Fe(OH)₃ -t^o> Fe₂O₃ + 3H₂O

3) 2NH₃ + \(\frac{3}{2}\)O₂ -t^o-> N₂ + 3H₂O

4) NaSO₃ + 2HCl -> 2NaCl + SO₂ + H₂O

5) 2H₂S + 3O₂ -t^o> 2SO₂ + 2H₂O

Lưu ý: Bạn chú ý những đều kiện cho phản ứng xảy ra mình đã làm nha.

1. \(4P+5O_2\rightarrow2P_2O_5\)

2. \(N_2+3H_2\rightarrow2NH_3\)

4. \(Fe+2HCl\rightarrow FeCl_2+H_2\)

3. \(2Al+6HCl\rightarrow2AlCl_2+H_2\)

5. \(Fe_2O_3+3H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+3H_2O\)

6. \(Fe_3O_4+4H_2\rightarrow3Fe+4H_2O\)

7. \(2Fe+3Cl_2\rightarrow2FeCl_3\)

8. \(2Al+3S\rightarrow Al_2S_3\)

9. \(2Al_2O_3\rightarrow4Al+3O_2\)

1. 4P+5O2→2P2O5

2. N2+3H2→2NH3

4. Fe+2HCl→FeCl2+H2

3. 2Al+6HCl→2AlCl2+H2

5. Fe2O3+3H2SO4→Fe2(SO4)3+3H2O

6. Fe3O4+4H2→3Fe+4H2O

7. 2Fe+3Cl2→2FeCl3

8. 2Al+3S→Al2S3

9. 2Al2O3→4Al+3O2

5)

1) \(\overset{+2}{Fe}\overset{-1}{S_2}+\overset{0}{O_2}\rightarrow\overset{+3}{Fe_2}\overset{-2}{O_3}+\overset{+4}{S}\overset{-2}{O_2}\)

quá trình OXH :\(\overset{+2}{Fe}\overset{-1}{S_2}\rightarrow\overset{+3}{Fe}+\overset{+4}{2S}+11e|\times4\)

quá trình khử : \(\overset{0}{2O}+2.2e\rightarrow\overset{-2}{2O}|\times11\)

2) \(\overset{+2}{Fe}\overset{-2}{S}+H\overset{+5}{N}O_3\rightarrow\overset{+3}{Fe}\left(\overset{+5}{N}O_3\right)_3+\overset{+2}{N}\overset{-2}{O}+H_2O+H_2\overset{+6}{S}O_4\)

quá trình OXH : \(\overset{+2}{Fe}\overset{-2}{S}\rightarrow\overset{+3}{Fe}+\overset{+6}{S}+9e|\times1\)

quá trình khử : \(\overset{+5}{N}+3e\rightarrow\overset{+2}{N}|\times3\)

\(\Rightarrow FeS+6HNO_3\rightarrow Fe\left(NO_3\right)_3+3NO+2H_2O+H_2SO_4\)

CÒN ĐỂ CHIỀU MK LM CHO NHA

a) 2FeCl₂ + Cl₂ \(\underrightarrow{to}\) 2FeCl₃

b) Al₂O₃ + 6HCl → 2AlCl₃ + 3H₂O

c) 3KOH + H₃PO₄ → K₃PO₄ + 3H₂O

d) 4CO + Fe₃O₄ \(\underrightarrow{to}\) 3Fe + 4CO₂

e) 3Cl₂ + 6KOH → 5KCl + KClO₃ + 3H₂O

g) 4Zn + 5H₂SO₄ → 4ZnSO₄ + H₂S + 4H₂O

a) 2FeCl₂ + Cl₂ \(\rightarrow\) 2FeCl₃

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

c) 3KOH + H₃PO₄ \(\rightarrow\) K₃PO₄ + 3H₂O

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

e) 3Cl₂ + 6KOH \(\rightarrow\) 5KCl + KClO₃ + 3H₂O

g) 4Zn + 5H₂SO₄ \(\rightarrow\) 4ZnSO₄ + H₂S + 4H₂O

Tự cân bằng nhá!
a,

\(HCl+MnO_2\rightarrow MnCl_2+Cl_2+H_2O\\ Cl_2+Fe\rightarrow FeCl_3\\ FeCl_3+NaOH\rightarrow Fe\left(OH\right)_3+NaCl\\ NaCl+H_2SO_{4\left(dn\right)}\rightarrow Na_2SO_4+HCl\\ HCl+CuO\rightarrow CuCl_2+H_2O\\ CuCl_2+AgNO_3\rightarrow Cu\left(NO_3\right)_2+AgCl\)
b,

\(KMnO_4+HCl\rightarrow KCl+MnCl_2+Cl_2+H_2O\\ Cl_2+H_2\rightarrow HCl\\ HCl+Fe\left(OH\right)_3\rightarrow FeCl_3+H_2O\\ FeCl_3+AgNO_3\rightarrow Fe\left(NO_3\right)_3+AgCl\\ AgCl-as,t^o->Ag+Cl_2\\ Cl_2+NaBr\rightarrow NaCl+Br_2\\ Br_2+NaI\rightarrow NaBr+I_2\)

c, Giống câu b 3 pt đầu
\(HCl+Fe\left(OH\right)_2\rightarrow FeCl_2+H_2O\\ FeCl_2+AgNO_3\rightarrow Fe\left(NO_3\right)_2+AgCl\\ AgCl-as,t^o->Ag+Cl_2\)
d,

\(HCl+MnO_2\rightarrow MnCl_2+Cl_2+H_2O\\ Cl_2+Fe\rightarrow FeCl_3\\ FeCl_3+NaOH\rightarrow Fe\left(OH\right)_3+NaCl\\ Fe\left(OH\right)_3+H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+H_2O\)
e,

\(HCl+MnO_2\rightarrow MnCl_2+Cl_2+H_2O\\ Cl_2+NaOH\rightarrow NaCl+NaClO+H_2O\\ NaCl+H_2SO_{4\left(dn\right)}\rightarrow Na_2SO_4+HCl\\ CuO+HCl\rightarrow CuCl_2+H_2O\\ CuCl_2+AgNO_3\rightarrow Cu\left(NO_3\right)_2+AgCl\\ AgCl-as,t^o->Ag+Cl_2\)
f,

\(MnO_2+HCl\rightarrow MnCl_2+Cl_2+H_2O\\ Cl_2+KOH-t^o->KClO_3+KCl+H_2O\\ KClO_3\rightarrow KCl+O_2\\ KCl+H_2SO_{4\left(dn\right)}\rightarrow K_2SO_4+HCl\\ HCl+MnO_2\rightarrow MnCl_2+Cl_2+H_2O\\ Ca\left(OH\right)_2+Cl_2\rightarrow CaCl_2+Ca\left(ClO\right)_2+H_2O\)

điều kiện lun nha mn

a, SO₂ + \(\dfrac{1}{2}\)O₂ -> SO₃

b. Fe(OH)₂ + 2HCl -> FeCl₂ + 2H₂O

c, BaCl₂ + Na₂SO₄ -> BaSO₄ + 2NaCl

d, Fe₃O₄ + 8HCl -> FeCl₂ + 2FeCl₃ + 4H₂O

a) 2SO₂ + O₂ →^to 2SO₃

b) Fe(OH)₂ + 2HCl → FeCl₂ + 2H₂O

c) BaCl₂ + Na₂SO₄ → BaSO₄↓ + 2NaCl

d) Fe₃O₄ + 8HCl → FeCl₂ + 2FeCl₃ + 4H₂O

mk k viết lại nữa mà chỉ điền số thôi nhá

a) 2 :1:2

b)1:2:1:2

c)bạn viết sai pt rồi : phải là BaCl₂+Na₂SO_4→BaSO₄ + 2NaCL

D)1:8:2:4

PTHH 1: N₂ + 3H₂ -t^o;xúc tác Fe,Pt; áp suất-> 2NH₃

PTHH 2: 2H₂S + 3O₂ -t^o-> 2SO₂ + 2H₂O

PTHH 3: 4FeS₂ + 11O₂ -t^o-> 2Fe₂O₃ + 8SO₂

PTHH 4: Fe₃O₄ + 8HCl -t^o-> 2FeCl₃ + FeCl₂ + 4H₂O