\(a.Zn+H_2SO_4\rightarrow ZnSO_4+H_2\\ b.Zn+2AgNO_3\rightarrow Zn\left(NO_3\right)_2+2Ag\\ c.2Na+S\xrightarrow[]{t^0}Na_2S\\ d.Ca+Cl_2\xrightarrow[]{t^0}CaCl_2\\ e.MgO+2HNO_3\rightarrow Mg\left(NO_3\right)_2+H_2O\\ f.Fe+2HCl\rightarrow FeCl_2+H_2\\ g.CuO+2HCl\rightarrow CuCl_2+H_2O\\ h.2Al+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2\\ i.Cl+2NaOH\rightarrow NaCl+NaClO+H_2O\\ k.MgO_2+4HCl_{đặc}\xrightarrow[nhẹ]{đun}MgCl_2+Cl_2+2H_2O\)

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

b. \(Fe+H_2SO_4\rightarrow FeSO_4+H_2\)

c. \(Fe\left(OH\right)_2+H_2SO_4\rightarrow FeSO_4+2H_2O\)

d. \(MgO+2HCl\rightarrow MgCl_2+H_2O\)

a 2Al2O3→4Al+3O2(nhiệt phân )

b Fe+H2SO4→FeSO4+H2

c Fe(OH)2+H2SO4→FeSO4+2H2O

d MgO+2HCl→MgCl2+H2O

\(n_{Mg}=\dfrac{4,8}{24}=0,2\left(mol\right)\\ pthh:Mg+2HCl\rightarrow MgCl_2+H_2\) 
          0,2       0,4                      0,2  
\(\Rightarrow m_{HCl}=0,4.36,5=14,6\left(g\right)\\ V_{H_2}=0,2.22,4=4,48\left(l\right)\\ pthh:FeO+H_2\underrightarrow{t^o}Fe+H_2O\) 
           0,2      0,2    0,2
\(m_{Fe}=0,2.56=11,2\left(g\right)\)

Viết lần lượt nhé: SO₃, FeCl₂, Mg(OH)₂, Zn₃(PO₄)₂, Pb(NO₃)₂, Al₂(SO₄)₃, H₂SO₃, NaOH, P₂O₅, HCl, CaCO₃, HgO, BaSO₃

31. Fe(OH)2 + 2HCl = 2H2O + FeCl2

32. HNO3 + NaOH --> H2O + NaNO3

33. BaSO4 + 2HNO3 = Ba(NO3)2 + H2SO4

34. CaCO3 + 2HCL => CaCl2 +H2O +CO2

35. HCL + AgNO3 ---> AgCl + HNO3

36. FeS +2 HCl --> FeCl2 + H2S ( sắt 2 ms đúng chứ :V)

37. FeCO3 + H2SO4 (đặc nóng) --> Fe2(CO3)2 + SO2 + CO2 + H2O

38. 2Al(OH)3 -t'--> Al2O3 + 3H2O

39. 2Fe(OH)3 -t'--> Fe2O3 + 3H2O

40. Zn(OH)2 --> ZnO + H2O

---------------------------------------------------------------------Thân

31. Fe(OH)₂ + 2HCl \(\rightarrow\) FeCl₂ + 2H₂O

32. NaOH + HNO₃ \(\rightarrow\) NaNO₃ +H₂O

33. BaSO₃ + 2HNO₃ \(\rightarrow\) Ba(NO₃)₂ + H₂O +SO₂

34. CaCO₃ + 2HCl \(\rightarrow\) CaCl₂ + H₂O + CO₂

35. ko xảy ra

36. ko xảy ra

37. Fe₂(SO₃)₃ + 3H₂SO4 \(\rightarrow\) Fe₂(SO₄)₃ +3 H₂O +3SO₂

38. 2Al(OH)₃ \(\xrightarrow[]{t}\) Al₂O₃ + 3H₂O

39. 2Fe(OH)₃ \(\xrightarrow[]{t}\) Fe₂O₃ + 3H₂O

40. Zn(OH)₂ \(\xrightarrow[]{t}\) ZnO + H₂O

41. Mg(OH)₂ \(\xrightarrow[]{t}\) MgO + H₂O

42. Zn(NO₃)₂ + 2KOH \(\rightarrow\) Zn(OH)₂ + 2KNO₃

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

44. MgSO₄ + Ca(OH)₂ \(\rightarrow\) Mg(OH)₂ + CaSO4

45. K₂CO₃ + Ba(OH)₂ \(\rightarrow\) 2KOH + BaCO₃

31, Fe(OH)2+2HCl--->FeCl2+2H2O

32, NaOH+HNO3--->NaNO3+H2O

33, BaSO3+2HNO3--->Ba(NO3)2+SO2+H2O

34, CaCO3+2HCl--->CaCl2+CO2+H2O

35, AgNO3+HCl--->AgCl+HNO3

36, Fe2S3+6HCl--->2FeCl3+3H2S

37, FeSO3+H2SO4--->FeSO4+SO2+H2O

38, 2Al(OH)3--->Al2O3+3H2O

39, 2Fe(OH)3--->Fe2O3+3H2O

40, Zn(OH)2--->ZnO+H2O

41, Mg(OH)2--->MgO+H2O

42, Zn(NO3)2+2KOH--->Zn(OH)2+2KNO3

43, FeCl3+3NaOH---> Fe(OH)3+3NaCl

44, MgSO4+Ca(OH)2--->Mg(OH)2+CaSO4

45, K2CO3+Ba(OH)2--->BaCO3+2KOH

Cảm ơn anh ạ

Oxit axit : 

Khí cacbonic : CO₂

Khí sunfuro : SO₂

Đi phot pho pentaoxit : P₂O₅

Oxit bazo : 

Sắt (II) oxit : FeO

Natri oxit : Na₂O 

Axit : 

Axit photphoric : H₃PO₄

Axit sunfuric : H₂SO₄

Axit sunfuro : H₂SO₃

Bazo : 

Natri hidroxit : NaOH

Canxi hidroxit : Ca(OH)₂

Magie hidroxit : Mg(OH)₂

Sắt (II) hidroxit : Fe(OH)₂

Kali hidroxit : KOH

Muối : 

Canxi clorua : CaCl₂

Kali nitrat : KNO₃

Canxi photphat : Ca₃(PO₄)₂

Kali photphat : K₃PO₄

Nhôm sunfat : Al₂(SO₄)₃

Sắt (III) nitrat : Fe(NO₃)₃

Kali sunfit : K₂SO₃

Muối ăn : NaCl

Kali hidrocacbonat : KH₂CO₃

Magie clorua : MgCl₂

Canxi hidrophotphat : CaH₂PO₄

 Chúc bạn học tốt

Nhôm clorua : \(AlCl_3\)

Đồng (II) clorua : \(CuCl_2\)

Nhôm hidroxit : \(Al\left(OH\right)_3\)

Kẽm sunfat : \(ZnSO_4\)

Sắt (II) nitrat : \(Fe\left(NO_3\right)_2\)

Magie cacbonat : \(MgCO_3\)

Thủy ngân (II) sunfat : \(HgSO_4\)

Sắt (III) sunfat : \(Fe_2\left(SO_4\right)_3\)

Sắt (II) cacbonat : \(FeCO_3\)

Kẽm nitrat : \(Zn\left(NO_3\right)_2\)

Đồng (II) nitrat : \(Cu\left(NO_3\right)_2\)

Canxi cacbonat : \(CaCO_3\)

Bari hidroxit : \(Ba\left(OH\right)_2\)

Canxi hidroxit : \(Ca\left(OH\right)_2\)

Axit photphoric : \(H_3PO_4\)

Natri photphat : \(Na_3PO_4\)

Kali photphat : \(K_3PO_4\)

Canxi sunfit : \(CaSO_3\)

 Chúc bạn học tốt

Câu 1 : 

\(a.\) \(Fe_2O_3+3H_2\underrightarrow{^{^{t^0}}}2Fe+3H_2O\)

\(b.P_2O_5+3H_2O\rightarrow2H_3PO_4\)

\(c.Mg+2HCl\rightarrow MgCl_2+H_2\)

\(d.Na+H_2O\rightarrow NaOH+\dfrac{1}{2}H_2\)

\(e.CaO+H_2O\rightarrow Ca\left(OH\right)_2\)

\(f.Fe_3O_4+4H_2\underrightarrow{^{^{t^0}}}3Fe+4H_2O\)

Câu 2 : 

\(n_{Fe_2O_3}=\dfrac{12}{160}=0.075\left(mol\right)\)

\(Fe_2O_3+3H_2\underrightarrow{^{^{t^0}}}2Fe+3H_2O\)

\(0.075......0.225..0.15\)

\(V_{H_2}=0.225\cdot22.4=5.04\left(l\right)\)

\(m_{Fe}=0.15\cdot56=8.4\left(g\right)\)

Câu 3 : 

\(2H_2+O_2\underrightarrow{^{^{t^0}}}2H_2O\)

\(1.........0.5\)

\(V_{O_2}=0.5\cdot22.4=11.2\left(l\right)\)

Câu 2 : 

$a) Mg + 2HCl \to MgCl_2 + H_2$

$n_{HCl} = 0,2.1 = 0,2(mol)$
Theo PTHH : $n_{H_2} = n_{MgCl_2} = \dfrac{1}{2}n_{HCl} = 0,1(mol)$
$V_{H_2} = 0,1.22,4 = 2,24(lít)$

$b) m_{MgCl_2} = 0,1.95 = 9,5(gam)$

Câu 3 : 

a) $Fe + H_2SO_4 \to FeSO_4 + H_2$

Theo PTHH : 

$n_{H_2SO_4} = n_{H_2} = n_{Fe} = \dfrac{5,6}{56} = 0,1(mol)$
$C\%_{H_2SO_4} = \dfrac{0,1.98}{500}.100\% = 1,96\%$

b)

$V_{H_2} = 0,1.22,4 = 2,24(lít)$
c)

$2H_2 + O_2 \xrightarrow{t^o} 2H_2o$
$V_{O_2} = \dfrac{1}{2}V_{H_2} = 1,12(lít)$

Câu 2 : 

\(n_{HCl}=0.2\cdot1=0.2\left(mol\right)\)

\(Mg+2HCl\rightarrow MgCl_2+H_2\)

\(..........0.2....0.1....0.1\)

\(V_{H_2}=0.1\cdot22.4=2.24\left(l\right)\)

\(m_{MgCl_2}=0.1\cdot95=9.5\left(g\right)\)