(1) \(2NaOH+SO2->Na2SO3+H2O\)

(2) \(Na2SO3+H2SO4->Na2SO4+SO2\uparrow+H2O\)

(3) \(SO3+H2O->H2SO4\)

(4) 2SO2 + \(O2\xrightarrow[V2O5]{t0}2SO3\)

(5) \(2H2SO4\left(đ,n\right)+Cu->CuSO4+SO2+2H2O\)

(6) \(Fe+CuSO4->FeSO4+Cu\)

1) Na₂O + H₂O \(\rightarrow\)2NaOH

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

3) Na₂SO₃ + H₂SO_{4\(\rightarrow\)} Na₂SO₄ + H₂O+ CO₂

4)SO₂ + 2KOH \(\rightarrow\)K₂SO₃ + H₂O

1.Na2O+H2O--->2NaOH

2.2NaOH+SO2--->Na2SO3+H2O

3.Na2SO3+H2SO4--->Na2SO4+H2O+CO2

4.2KOH+SO2--->K2SO3+H2O

(1) CaC2 + 2H2O => C2H2 + Ca(OH)2

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

(3) C2H4 + H2O => (t^o,H2SO4đ) C2H5OH

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

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

\(\left(1\right)CaC_2+2H_2O\rightarrow Ca\left(OH\right)_2+C_2H_2\)

\(\left(2\right)C_2H_2+H_2\xrightarrow[to]{Ni}C_2H_4\)

\(C_2H_4+2H_2O\xrightarrow[30-35^oC]{men.rượu}C_2H_5OH+H_2O\)

\(C_2H_5OH+O_2\xrightarrow[men.giấm]{30-35^oC}CH_3COOH+H_2O\)

\(C_2H_5OH+CH_3COOH\xrightarrow[\leftarrow]{H_2SO_4đ,t^o}CH_3COOC_2H_5+H_2O\)

1) CaC2 + 2H2O -> Ca(OH)2 + C2H2

2) C2H2 + H2 -> C2H4 (đk: Ni ; t^o)

3)C2H4 + 2H2O --> C2H5OH (ĐK: t^o)

4) C2H5OH + O2 -> CH3COOH + H2O (ĐK: lên men)

5) CH3COOH + C2H5OH -> CH3COOC2H5 + H2O

(ĐK: H2SO4 đặc ; t^o)

1) Al\(_2\)(SO\(_4\))\(_3\)+3BaCl\(_2\)→2AlCl\(_3\)+3BaSO\(_4\)↓

2)AlCl\(_3\)+3AgNO\(_3\)→Al(NO\(_3\))\(_3\)+3AgCl↓

3)Al(NO\(_3\))\(_3\)+3NaOH→Al(OH)\(_3\)+3NaNO\(_3\)

4)2Al(OH)\(_3\)\(\underrightarrow{to}\)Al₂O₃+3H₂O

5)2Al₂O₃\(\xrightarrow[criolit]{đpnc}\)4Al+3O₂

(1) S+02===> S02 ( Nhiệt độ)

(2) 2SO2+ 02===> 2S03( ĐIỀU KIỆN V2O5, 450 độ)

(3) S03+ H20=====> H2S04

(4)3 H2S04+ 2Al====> Al2( S04)3+ 3/2H2 

(5) ZnO+ H2===> Zn+ H20

(6) Zn+ HCl=====> ZnCl2+ H2

theo tớ nghĩ thôi nhá

$(1) S + O_2 \xrightarrow{t^o} SO_2$
$(2) SO_2 + H_2O \to H_2SO_3$
$(3) H_2SO_3 + 2NaOH \to Na_2SO_3 + 2H_2O$
$(4) Na_2SO_3 + 2HCl \to 2NaCl +SO_2 + H_2O$
$(5) SO_2 + 2NaOH \to Na_2SO_3 + H_2O$

`(1)FeO + H_2SO_4 -> FeSO_4 + H_2O`

`(2)FeSO_4 + Ba(OH)_2 -> Fe(OH)_2 + BaSO_4`

`(3)Fe(OH)_2 -> (t^o, chân.không) FeO + H_2O`

`(4)FeO + 2HCl -> FeCl_2 + H_2O`

a) 1: Na + O₂ \(\rightarrow\) Na₂O

2: Na₂O + H₂O \(\rightarrow\) 2NaOH

3: NaOH + SO₃ \(\rightarrow\) Na₂SO₄ + H₂O

4: Na₂SO₄ + BaCl₂ \(\rightarrow\) NaCl + BaSO₄

b) 1: CaO + H₂O \(\rightarrow\) Ca(OH)₂

2: Ca(OH)₂ + H₂CO₃ \(\rightarrow\) CaCO₃ + 2H₂O

3: CaCO₃ \(\underrightarrow{t^o}\) CaO + CO₂

4: CaO + HCl \(\rightarrow\) CaCl₂ + H₂O

a) 1. 4Na + O₂ → 2Na₂O

2. Na₂O + H₂O → 2NaOH

3. 2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O

4. Na₂SO₄ + BaCl₂ → 2NaCl + BaSO₄↓