1)

(5x-2y)FeO+(16x-6y)HNO₃\(\rightarrow\)(5x-2y)Fe(NO₃)₃+N_xO_y+(8x-3y)H₂O

2)

(5x-2y)M+(6nx-2ny)HNO₃\(\rightarrow\)(5x-2y)M(NO₃)_n+nN_xO_y+(3nx-ny)H₂O

3)

3xFe₂O₃+(6x-4y)Al\(\rightarrow\)6Fe_xO_y+(3x-2y)Al₂O₃

4)

3Fe_mO_n+(12m-2n)HNO₃\(\rightarrow\)3mFe(NO₃)₃+(3m-2n)NO+(6m-n)H₂O

5)

(10-2x)FeS₂+(60-6x)HNO₃\(\rightarrow\)(10-2x)Fe(NO₃)₃+15N₂O_x+(10+x)H₂O+(20-4x)H₂SO₄

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) \(K_2O+H_2O->2KOH\)

b) \(2Fe+3Cl_2->2FeCl_3\)

c) \(2Al\left(OH\right)_3+3H_2SO_4->Al_2\left(SO_4\right)_3+6H_2O\)

d) \(4FeS_2+11O_2->2Fe_2O_3+8SO_2\)

e)\(2Al+6HCl->2AlCl_3+3H_2\)

f) \(2KClO_3->KCl+3O_2\)

g) \(4P+5O_2->2P_2O_5\)

h) \(3Fe+2O_2->Fe_3O_4\)

i) \(2Al+3CuSO_4->Al_2\left(SO_4\right)_3+3Cu\)

j) \(2K+2H_2O->2KOH+H_2\)

1. 3FeO + 10HNO3-> 3Fe(NO3)3 + NO + 5H2O

2. 3Fe3O4 + 28HNO3->3 Fe(NO3)3 + NO + 14H2O

3.3 Cu + 2KNO3 + 4H2SO4->3 CuSO4 + 2NO + K2SO4 + 4H2O

4. 3CuFeS2 +8 Fe2(SO4)3 +8 O2 +8 H2O-> 3CuSO4 + 19FeSO4 + 8H2SO4

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 :))))

1,10FeSO4+2KMnO4+8H2SO4→5Fe2(SO4)3+2MnSO4+K2SO4+8H2O

2,3Fe(OH2)+10HNO3→3Fe(NO3)3+NO+8H2O

1.8H2SO4+2KMnO4+10FeSO4→5Fe2(SO4)3+8H2O+2MnSO4+K2SO4

2.10HNO3+3Fe(OH)2→8H2O+NO+3Fe(NO3)3

like mình nha








 

Các quá trình:

\(22223\times|Al^0\rightarrow Al^{+3}+3e\)

\(3\times|\left\{{}\begin{matrix}2020.2N^{+5}+16160e\rightarrow2020N^{+1}_2\\2021N^{+5}+6063e\rightarrow2021N^{+2}\end{matrix}\right.\) ⇒ Σe _nhận = 22223

Đặt hệ số vào PT, ta được:

\(22223Al+84852HNO_3\rightarrow22223Al\left(NO_3\right)_3+6060N_2O+6063NO+42426H_2O\)

Bạn tham khảo nhé!

a) 3Cu+8HNO₃→3Cu+2NO+4H₂O

b) Fe₃O₄+8HCl→FeCl₂+2FeCl₃+4H₂O

cho mk sửa phần a là 3Cu+8HNO₃→3Cu(NO₃)₂+2NO+4H₂O

a) 3Cu + 8HNO₃ → 3Cu(NO₃)₂ + 2NO + 4H₂O

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