\(2C_xH_yO_z+\dfrac{4x+y-2z}{2}O_2\underrightarrow{t^o}2xCO_2+yH_2O\)

\(2C_xH_yO+\dfrac{4x+y-2}{2}O_2\underrightarrow{t^o}2xCO_2+yH_2O\)

\(6Fe_xO_y+\left(12x-2y\right)H_2SO_{4\left(đ\right)}\underrightarrow{t^o}3xFe_2\left(SO_4\right)_3+\left(3x-2y\right)S+\left(12x-2y\right)H_2O\)

\(8Fe_xO_y+\left(30x-4y\right)HNO_3\rightarrow8xFe\left(NO_3\right)_3+\left(3x-2y\right)N_2O+\left(15x-2y\right)H_2O\)

$\rm u)S + 2HNO_3 \rightarrow H_2SO_4 + 2NO \uparrow$

$\rm v)3Ba(NO_3)_2 + Al_2(SO_4)_3 \rightarrow 3BaSO_4 \downarrow + 2Al(NO_3)_3$
$\rm w)3Ba(OH)_2 + P_2O_5 \rightarrow Ba_3(PO_4)_3 \downarrow + 3H_2O$
$\rm x)2Fe_2O_3 + 3C \xrightarrow{t^o} 4Fe + 3CO_2 \uparrow$

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, 4

2, 2

3, 8

4,

5, 8

6, 10

$\rm k)2KMnO_4 \xrightarrow{t^o} K_2MnO_4 + MnO_2 + O_2 \uparrow$
$\rm l)CH_4 + 2O_2 \xrightarrow{t^o} CO_2 + 2H_2O$
$\rm m)2Al + 3H_2SO_4 \rightarrow Al_2(SO_4)_3 + 3H_2 \uparrow$
$\rm n)Na_2CO_3 + CaCl_2 \rightarrow CaCO_3 \downarrow + 2NaCl$
$\rm o)2Na + 2H_2O \rightarrow 2NaOH + H_2 \uparrow$
$\rm p)CaO + 2HNO_3 \rightarrow Ca(NO_3)_2 + H_2O$
$\rm q)P_2O_5 + 3H_2O \rightarrow 2H_3PO_4$
$\rm r)Zn + 2HCl \rightarrow ZnCl_2 + H_2 \uparrow$
$\rm s)4Al + 3O_2 \xrightarrow{t^o} 2Al_2O_3$
$\rm t)Ba(OH)_2 + 2HCl \rightarrow BaCl_2 + 2H_2O$

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








 

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

1) Cu + 4HNO₃ → Cu(NO₃)₂ + 2NO₂ + 2H₂O

2) Al + 4HNO₃ → Al(NO₃)₃ + NO + 2H₂O

3) Al + 6HNO₃ → Al(NO₃)₃ + 3NO₂ + 3H₂O

4) 2Fe + 6H₂SO₄ → Fe₂(SO₄)₃ + 3SO₂ + 6H₂O

$\mathrm{1)\; 3M}+\mathrm{4nH}N{O}_3\to \mathrm{3M}{\left(N{O}_3\right)}_n+\mathrm{nN}O+{\mathrm{2nH}}_{2}O$

M⁰ → M⁺ⁿ + ne |3

N⁺⁵ + 3e → N⁺² | n

Tương tự:

$\mathrm{2)\; 2M}+{\mathrm{2nH}}_{2}S{O}_4\to M_2{\left(S{O}_4\right)}_n+\mathrm{nS}{O}_2+{\mathrm{2nH}}_{2}O$

$\mathrm{3)\; 8M}+\mathrm{30H}N{O}_3\to \mathrm{8M}{\left(N{O}_3\right)}_3+{\mathrm{3N}}_{2}O+{\mathrm{15H}}_{2}O$

$\mathrm{M0\; +\; 3e}$→ M⁺³ | 8

$\mathrm{2N+5\; +\; 8e}$→ N₂⁺¹O | 3

$\mathrm{4)\; 2F}{e}_x{O}_y+\mathrm{2yH2}S{O}_4\to \mathrm{xF}{e}_2{\left(S{O}_4\right)}_{\frac{2y}{x}}+{\mathrm{2yH}}_{2}O$

$P$hương trình này không phải pt oxi hóa khử nên cứ cân bằng nhẩm bình thường

$\mathrm{các\; câu\; còn\; lại\; tương\; tự}$

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