\(1,CH_4+Cl_2\underrightarrow{\text{ánh sáng}}CH_3Cl\\ 2,C_6H_6+Br_2\xrightarrow[t^o]{Fe}C_6H_5Br\\ 3,C_6H_6+Cl_2\underrightarrow{\text{ánh sáng}}C_6H_5Cl\\ 4,2CH_3COOH+CaCO_3\rightarrow\left(CH_3COO\right)_2Ca+CO_2\uparrow+H_2O\\ 5,\left(RCOO\right)_3C_3H_5+3NaOH\rightarrow3RCOONa+C_3H_5\left(OH\right)_3\\ 6,CaCO_3+CO_2+H_2O\rightarrow Ca\left(HCO_3\right)_2\\ 7,2NaHCO_3\underrightarrow{t^o}Na_2CO_3+CO_2\uparrow+H_2O\\ 8,NaOH+SiO_2\underrightarrow{t^o}Na_2SiO_3+H_2O\)

\(9,NaHCO_3+HCl\rightarrow NaCl+CO_2\uparrow+H_2O\\ 10,Cl_2+H_2O⇌HCl+HClO\\ 11,CH_3COOC_2H_5+NaOH\rightarrow CH_3COONa+C_2H_5OH\\ 12,C_6H_6+3H_2\xrightarrow[t^o]{Ni}C_6H_{12}\\ 13,\left(RCOO\right)_3C_3H_5+3H_2O\rightarrow3RCOOH+C_3H_5\left(OH\right)_3\\ 14,\left(-C_6H_{10}O_5-\right)_n+nH_2O\rightarrow nC_6H_{12}O_6\\ 15,CH_3COONa+NaOH\underrightarrow{t^o}CH_4\uparrow+Na_2CO_3\\16, Ca\left(HCO_3\right)\underrightarrow{t^o}CaCO_3+CO_2\uparrow+H_2O\)

\(17,MnO_2+4HCl\rightarrow MnCl_2+Cl_2\uparrow+2H_2O\\ 18,NaHCO_3+NaOH\rightarrow Na_2CO_3+H_2O\\ 19,2C_4H_{10}+5O_2\xrightarrow[men,xt]{t^o}4CH_3COOH+2H_2O\\ 20,2NaOH+Cl_2\rightarrow NaCl+NaClO+H_2O\\ 21,CH_3COOC_2H_5+H_2O\underrightarrow{t^o}CH_3COOH+C_2H_5OH\)

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 :))))

Bài 3 :

4FeS + 7O2 --t--> 2Fe2O3 + 4SO2

Fe2O3 + 6HNO3 -> 2Fe(NO3)3 + 3H2O

Fe(NO3)3 + 3 NaOH -> Fe(OH)3 +3NaNO3

2Fe(OH)3 --t--> Fe2O3 + 3H2O

Fe2O3 + 3H2 -t-> 2Fe + 3H2O

Fe + S -t-> FeS

1, FeCl₃ + 3KOH → Fe(OH)₃ + 3KCl

2Fe(OH)₃ \(\underrightarrow{t^o}\)Fe₂O₃ + 3H₂O

Fe₂O₃ + 3H₂ \(\underrightarrow{t^o}\) 2Fe + 3H₂O

3Fe + 2O₂ \(\underrightarrow{t^o}\) Fe₃O₄

2, 2Ca + O₂ \(\underrightarrow{t^o}\) 2CaO

CaO + H₂O → Ca(OH)₂

Ca(OH)₂ + CO₂ → CaCO₃ + H₂O

CaCO₃ + H₂O + CO₂→ Ca(HCO₃)₂

Ca(HCO₃)₂ + 2HCl → CaCl₂ + 2H₂O + 2CO₂

CaCl₂ + Ca(OH)₂ → 2CaO + 2HCl

3, 4FeS + 7O₂ \(\underrightarrow{t^o}\) 2Fe₂O₃ + 4SO₂

Fe₂O₃ + 6HNO₃ → 2Fe(NO₃)₃ + 3H₂O

Fe(NO₃)₃ + 3KOH → Fe(OH)₃ + 3KNO₃

2Fe(OH)₃ \(\underrightarrow{t^o}\) Fe₂O₃ + 3H₂O

Fe₂O₃ + 3H₂ \(\underrightarrow{t^o}\) 2Fe + 3H₂O

Fe + S \(\underrightarrow{t^o}\) FeS

\(FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_3+3NaCl\\2 Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O\\ Fe_2O_3+3CO\rightarrow2Fe+3CO_2\\3 Fe+2O_2\underrightarrow{t^o}Fe_3O_4\)

\(Ca+\frac{1}{2}O_2\underrightarrow{t^o}CaO\\ CaO+H_2O\rightarrow Ca\left(OH\right)_2\\ Ca\left(OH\right)_2+CO_2\rightarrow CaCO_3+H_2O\\ CaCO_3+H_2O+CO_2\rightarrow Ca\left(HCO_3\right)_2\\ Ca\left(HCO_3\right)+2HCl\rightarrow CaCl_2+2H_2O+2CO_2\\ CaCl_2+Ca\left(OH\right)_2\rightarrow2CaO+2HCl\)

\(4FeS+7O_2\underrightarrow{t^o}2Fe_2O_3+4SO_2\\ Fe_2O_3+HNO_3\rightarrow Fe\left(NO_3\right)_3+H_2O\\ Fe\left(NO_3\right)_3+3NaOH\rightarrow3NaNO_3+Fe\left(OH\right)_3\\ 2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O\\ Fe_2O_3+3CO\underrightarrow{t^o}2Fe+3CO_2\\ Fe+S\underrightarrow{t^o}FeS\)

a) SO₂ + Na₂O -> Na₂SO₃

Na₂SO₃ + H₂SO₄ -> Na₂SO₄ + SO₂ + H₂O

Na₂SO₄ + Ba(OH)₂ -> BaSO₄ \(\downarrow\)+ 2NaOH

2NaOH + CO₂ -> Na₂CO₃ + H₂O

b) CaO + CO₂ -> CaCO₃

CaCO₃ \(\rightarrow^{t^o}\) CaO + CO₂

CaO + H₂O -> Ca ( OH)₂

Ca ( OH)₂ + CO₂ -> CaCO₃ + H₂O

CaCO₃ + H₂SO₄ -> CaSO₄ + CO₂ + H₂O

c) 2Fe + 3Cl₂ \(\rightarrow^{t^o}\) 2FeCl₃

FeCl₃ + 3NaOH -> Fe(OH)₃ \(\downarrow\) + 3NaCl

2Fe(OH)₃ \(\rightarrow^{t^o}\) Fe₂O₃ + 3H₂O

Fe₂O₃ + 3H₂SO₄ -> Fe₂(SO₄)₃ + 3H₂O

Fe₂(SO₄)₃ + 3BaCl₂ -> 2FeCl₃ + 3BaSO₄\(\downarrow\)

d) Fe + 2HCl -> FeCl₂ + H₂

FeCl₂ + 2AgNO₃ -> 2AgCl\(\downarrow\) + Fe(NO₃)₂

Fe(NO₃)₂ + 2NaOH -> Fe(OH)₂\(\downarrow\) + 2NaNO₃

Fe(OH)₂ + H₂SO₄ -> FeSO₄ + 2H₂O

a, SO₂ + 2NaOH \(\rightarrow\)Na₂SO₃ + H₂O

Na₂SO₃ + H₂SO₄ \(\rightarrow\)Na₂SO₄ + H₂O + SO₂

Na₂SO₄ + Ba(OH)₂\(\rightarrow\) BaSO₄+ 2 NaOH

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

b, CaO + CO₂\(\rightarrow\) CaCO₃

CaCO₃ -t⁰-> CaO + CO₂

CaO + H₂O \(\rightarrow\)Ca(OH)₂

Ca(OH)₂ + CO₂ \(\rightarrow\)CaCO₃ + H₂O

CaCO₃ + H₂SO₄ \(\rightarrow\)CaSO₄ + H₂O + CO₂

c, 2Fe + 3Cl₂ -t⁰-> 2FeCl₃

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

2Fe(OH)₃ -t⁰-> Fe₂O₃ + 3H₂O

Fe₂O₃ + 3H₂SO₄ \(\rightarrow\)Fe₂(SO4)₃ + 3H₂O

Fe₂(SO4)₃ + 3BaCl₂ \(\rightarrow\)2FeCl₃ + 3BaSO₄

d, Fe + 2HCl \(\rightarrow\)FeCl₂ + H₂

FeCl_{2 +} 2AgNO₃ \(\rightarrow\)Fe(NO₃)₂ + 2AgCl

Fe(NO₃)₂ + 2NaOH \(\rightarrow\)Fe(OH)₂ + 2NaNO₃

Fe(OH)₂ + H₂SO₄\(\rightarrow\) FeSO₄ + 2H₂O

e, 2Cu + O₂ -t⁰-> 2CuO

CuO + 2HCl \(\rightarrow\)CuCl₂ + H₂O

CuCl₂ + 2NaOH\(\rightarrow\) Cu(OH)₂ + 2NaCl

Cu(OH)₂ -t⁰-> CuO + H₂O

CuO + H₂ -t⁰-> Cu + H₂O

Cu + 2H₂SO_4đặc \(\rightarrow\)CuSO₄ + SO₂ + 2H₂O

f, 2Al₂O₃ -đpnc/ criolit-> 4Al + 3O₂

2Al + 3Cl₂ -t⁰-> 2AlCl₃

AlCl₃ + 3NaOH \(\rightarrow\)Al(OH)₃ + 3NaCl

2NaCl + 2H₂O -đpmn-> 2NaOH + Cl₂ + H₂

2NaOH + CuCl₂ \(\rightarrow\)Cu(OH)₂ + 2NaCl

ko có đề bài hả bạn ????????????????????

PTHH (1), (2), (3), (5), (8) đã cân bằng

\(\left(4\right)Ca\left(OH\right)_2+H_2SO_4\rightarrow CaSO_4+2H_2O\)

\(\left(6\right)Al\left(OH\right)_3+3HCl\rightarrow AlCl_3+3H_2O\)

\(\left(7\right)MnO_2+4HCl\rightarrow MnCl_2+Cl_2+2H_2O\)

\(\left(9\right)P_2O_5+3H_2O\rightarrow2H_3PO_4\)

\(\left(10\right)2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O\)

CaO + CO₂ → CaCO₃

CaO + H₂O → Ca(OH)₂

CaCO₃ + H₂O + CO₂ → Ca(HCO₃)₂

Ca(OH)₂ + H₂SO₄ → CaSO₄ + 2H₂O

Fe + H₂SO₄ → FeSO₄ + H₂

2Al(OH)₃ + 6HCl → 2AlCl₃ + 6H₂O

MnO₂ + 4HCl → MnCl₂ + Cl₂ + 2H₂O

H₂SO₄ + Na₂CO₃ → Na₂SO₄ + CO₂ + H₂O

P₂O₅ + 3H₂O → 2H₃PO₄

2Fe(OH)₃ \(\underrightarrow{to}\) Fe₂O₃ + 3H₂O

\(Ca\left(OH\right)_2+H_2SO_4\rightarrow CaSO_4+2H_2O\)

\(Al\left(OH\right)_3+3HCl\rightarrow AlCl_3+3H_2O\)

\(MnO_2+4HCl\rightarrow MnCl_2+Cl_2+2H_2O\)

\(P_2O_5+3H_2O\rightarrow2H_3PO_4\)

\(2Fe\left(OH\right)_3\rightarrow Fe_2O_3+3H_2O\)

PT còn lại đều cân bằng rồi bạn à

1/ C2H4 + H2O => (140^o,H2SO4đ) C2H5OH

C2H5OH + O2 => (men giấm) CH3COOH + H2O

CH3COOH + C2H5OH => (H2SO4đ,t^o) <pứ hai chiều> CH3COOC2H5 + H2O

CH3COOC2H5 + NaOH => (t^o) CH3COONa + C2H5OH

2/ C6H12O6 => (men rượu,t^o) 2CO2 + 2C2H5OH

C2H5OH + O2 => (men giấm) CH3COOH + H2O

2CH3COOH + CaCO3 => (CH3COO)2Ca + CO2 + H2O

3/ CaC2 + 2H2O => Ca(OH)2 + C2H2

C2H2 + H2 => (Pd, t^o) C2H4

C2H4 + 1/2 O2 => (xt,P,t^o) CH3CHO

CH3CHO + 1/2 O2 => CH3COOH

nPb(NO3)₂=0,2mol.
Gọi \(n_{Pb\left(NO_3\right)_2}\) bị nhiệt phân = x mol.
Pb(NO₃)₂ ---> PbO + 2NO₂ +\(\frac{1}{2}O_2\)
x------------------------------->2x--------->0,5x mol
Ta có: mNO₂+mO₂= khối lượng chất rắn giảm.
=> 2x.46+0,5x.32=66,2-55,4=10,8 => x=0,1
=> H=50%

Phản ứng C

A là phản ứng trung hoà

B là phản ứng hoá hợp

D là phản ứng thế

c