a) K2O + H2O ----> 2KOH

b) Zn + H2SO4 ------> ZnSO4 + H2

c) MgO + 2HCl ---> MgCl2 + H2O

d) 3Ca + 2H3PO4 ----> Ca3(PO4)2 + 3H2

e) Fe3O4 + 8HCl-----> 2FeCl3 + FeCl2 + 4H2O

a)\(SO_2+O_2\xrightarrow[]{}SO_3\)(phản ứng hoá hợp)

b)\(Mg+2HCl\xrightarrow[]{}MgCl_2+H_2\)(phản ứng thế)

c)\(2KClO_3\underrightarrow{t^o}2KCl+3O_2\)(phản ứng phân huỷ)

Canxi oxit: CaO : 56đvc

Caxi nitrat : Ca(NO3)2:164đvc

Bari hidroxit:Ba(OH)2:171đvc

Bari sunfat:BaSO4 :233đvc

Lưu huỳnh đioxit: SO2 :64đvc

Kali sunfit: K2SO3:158đvc

đồng hidroxit: Cu(OH)2 : 98đvc

Axxit clohidric: HCl :36,5đvc

Kaliclorua:KCl:74,5đvc

axxit sunfuric:H2SO4 :98đvc

Lưu huỳnh trioxit :SO3 :80đvc

Sắt (III) Clorua: FeCl3 :162,5đvc

Bari nitrat:Ba(NO3)2:261đvc

Đồng (II) oxit: CuO :80đvc

Cabonat:CO3 :60đvc

Nhôm sunfat:Al2(SO4)3:342đvc

Natriphotphat: Na3PO4:164đvc

Magie clo rua: MgCl2 :95đvc

Mangan ddioxxit:MnO2:87đvc

Điphotphopentaoxit:P2O5:142đvc

a+b

- CaO = 56 đvC

Ca(NO3)2 = 164 đvC

Ba(OH)2 : 171 đvC

BaSO4 = 233 đvC

SO2 = 64đvC

K2SO3 = 158đvC

Cu(OH)2=98đvC

HCl= 36,5 đvC

KCl = 74,5 đvC

H2SO4 = 98đvC

Tương tự làm tiếp đi nhé

a) Mg(NO₃)₂ + 2KOH --> 2KNO₃ + Mg(OH)₂\(\downarrow\)

Tỉ lệ: 1:2:2:1

b) Fe₂(SO₄)₃ + 3Ba(NO₃)₂ --> 2Fe(NO₃)₃ + 3BaSO₄\(\downarrow\)

Tỉ lệ: 1:3:2:3

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

Tỉ lệ: 1:2:1:2

d) 2Al(OH)₃ + 3H₂SO₄ --> Al₂(SO₄)₃ + 6H₂O

Tỉ lệ: 2:3:1:6

e) 2Na + 2H₂O --> 2NaOH + H₂

Tỉ lệ: 2:2:2:1

f) N₂O₅ + H₂O --> 2HNO₃

Tỉ lệ: 1:1:2

g) 6Na + 2H₃PO₄ --> 2Na₃PO₄ + 3H₂

Tỉ lệ: 6:2:2:3

h) 4P + 5O₂ --t^o--> 2P₂O₅

Tỉ lệ: 4:5:2

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

- Muối

+) Magie cacbonat: MgCO₃

+) Kẽm clorua: ZnCl₂

+) Natri sunfat: Na₂SO₄

+) Kẽm đihdrophotphat: Zn(H₂PO₄)₂

+) Nhôm sunfat: Al₂(SO₄)₂

+) Thủy ngân clorua: HgCl₂

+) Kali photphat: K₃PO₄

- Bazơ

+) Bari hidroxit: Ba(OH)₂

+) Magie hidroxit: Mg(OH)₂ 

- Axit: Axit photphoric H₃PO₄

- Oxit 

+) Đồng (II) oxit: CuO

+) Lưu huỳnh đioxxit: SO₂

+) Magie oxit: MgO

\(1,CuO+2HCl\rightarrow CuCl2+H2O\)

\(2,K2SO4+Ba\left(OH\right)2\rightarrow B\text{aS}O4\downarrow+2KOH\)

\(3,MgCl2+2NaOH\rightarrow Mg\left(OH\right)2\downarrow+2NaCl\)

\(4,Zn+2AgNO3\rightarrow Zn\left(NO3\right)2+2Ag\)

5, \(2Fe\left(OH\right)3-^{t0}\rightarrow Fe2O3+3H2O\)

\(6,Al2O3+3H2SO4\rightarrow Al2\left(SO4\right)3+3H2O\)

\(7,Ag2O+2HCl\rightarrow2AgCl+H2O\)

\(8,2NaCl+2H2O-\left(ddpddd\left(c\text{ó}-m\text{àng}-ng\text{ă}n\right)\right)\rightarrow2NaOH+H2+Cl2\)

\(9,Na2O+H2O\rightarrow2NaOH\)

\(10,2K+2H2O\rightarrow2KOH+H2\)

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

help me!!!!!!!!!!!!!!!!!