Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
1, CO2+H2O--->H2CO3
2, SO3+H2O--->H2SO4
3, SO2+H2O--->H2SO3
4, N2O5+H2O---> 2HNO3
5, P2O5+3H2O--->2H3PO4
6, SO2+K2O--->K2SO3
7, CO2+BaO--->BaCO3
8, SO3+Na2O--->Na2SO4
9, P2O5+3CaO--->Ca3(PO4)2
10, N2O5+K2O--->2KNO3
11, CO2+2NaOH--->Na2CO3+H2O
12, SO2+Ca(OH)2--->CaSO3+H2O
13, SO3+Ba(OH)2--->BaSO4+H2O
14, N2O5+2KOH--->2KNO3+H2O
15, P2O5+3Ba(OH)2--->Ba3(PO4)2+3H2O
16, Na2O+H2O--->2NaOH
17, K2O+H2O--->2KOH
18, CaO+H2O--->Ca(OH)2
19, BaO+H2O--->Ba(OH)2
20, Al2O3+6HCl--->2AlCl3+3H2O
21, Fe2O3+6HNO3---> 2Fe(NO3)3+3H2O
22, ZnO+H2SO4--->ZnSO4+H2O
23, 3CaO+2H3PO4--->Ca3(PO4)2+3H2O
24, Fe+2HCl--->FeCl2+H2
25, Mg+H2SO4--->MgSO4+H2
26, 2Al+6HCl--->2AlCl3+3H2
27, Zn+H2SO4---->ZnSO4+H2
28, Cu+2H2SO4---> CuSO4+SO2+2H2O
29, Al(OH)3+3HCl--->AlCl3+3H2O
30, Zn(OH)2+H2SO4--->ZnSO4+2H2O
1.Hãy tính số mol có trong:
\(a.27,2\left(g\right)ZnCl_2\\
n_{ZnCl_2}=\dfrac{27,2}{136}=0,2\left(mol\right)\\
b.V_{O_2\left(đktc\right)}=11,2\left(l\right)\\
n_{O_2}=\dfrac{11,2}{22,4}=0,5\left(mol\right)\\
c.150\left(ml\right)ddNaOH2M\\
n_{NaOH}=0,15.2=0,3\left(mol\right)\\
d.200\left(g\right)ddH_2SO_419,6\%\\
n_{H_2SO_4}=\dfrac{200.19,6\%}{98}=0,4\left(mol\right)\)
Cho 2,7gam Al phản ứng với dd có chứa 29,4gam H2SO4.
a. Lập PTHH
b. Chất nào dư sau phản ứng và dư bao nhiêu gam.
c. Tính khối lượng muối thu được.
d. Tính thể tích khí sinh ra( đktc).
----
\(a.2Al+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2\\ n_{Al}=\dfrac{2,7}{27}=0,1\left(mol\right)\\ n_{H_2SO_4}=\dfrac{29,4}{98}=0,3\left(mol\right)\\b. Vì:\dfrac{0,1}{2}< \dfrac{0,3}{3}\Rightarrow H_2SO_4dư\\ m_{H_2SO_4\left(dư\right)}=98.\left(0,3-0,1.\dfrac{3}{2}\right)=14,7\left(g\right)\\ c.n_{Al_2\left(SO_4\right)_3}=\dfrac{0,1}{2}=0,05\left(mol\right)\\ m_{Al_2\left(SO_4\right)_3}=342.0,05=17,1\left(g\right)\\ d.n_{H_2}=\dfrac{3}{2}.0,1=0,15\left(mol\right)\\ V_{H_2\left(đktc\right)}=0,15.22,4=3,36\left(l\right)\)
\(a,4K+O_2\overset{t^0}{\rightarrow}2K_2O\)
\(K_2O+H_2O\rightarrow2KOH\)
\(KOH+HCl\rightarrow KCl+H_2O\)
\(b,S+O_2\overset{t^0}{\rightarrow}SO_2\)
\(2SO_2+O_2\overset{t^0}{\rightarrow}2SO_3\)
\(SO_3+H_2O\rightarrow H_2SO_4\)
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
1,Fe2O3 + 6HCl-> 2FeCl3 + 3H2O
2,Ca(OH)2 + H2SO4 -> CaSO4 + 2H2O
3,2Al + 6HCl -> 2AlCl3 + 3H2
4,Ba(NO3)2 + K2SO4 -> BaSO4 + 2KNO3
5, FeCl3 + 3KOH -> Fe(OH)3 + 3KCl
6, SO2 + H2O -> H2SO3
7, P2O5 + 6NaOH -> 2Na3PO4 + 3H2O
8, SO3 + 2KOH -> K2SO4 + H2O
9, Al2S3 + 6HCl -> 3H2S + 2AlCl3
10, Ca(HCO3)2 + 2HCl -> CaCl2 + 2CO2 + 2H2O
11, chưa cân bằng xong
12, 2K + 2H2O -> 2KOH + H2
13, Fe3O4 + 8HCl -> 2FeCl3 + FeCl2 + 4H2O
14, Ca(OH)2 + FeSO4 -> CaSO4 + Fe(OH)2
1. \(Fe_2O_3+6HCl\rightarrow2FeCl_3+3H_2O\)
2. \(Ca\left(OH\right)_2+H_2SO_4\rightarrow CaSO_4+2H_2O\)
3. \(2Al+6HCl\rightarrow2AlCl_3+3H_2\uparrow\)
5. \(FeCl_3+3KOH\rightarrow Fe\left(OH\right)_3\downarrow+3KCl\)
6. \(SO_2+H_2O\rightarrow H_2SO_3\)
7. \(P_2O_5+6NaOH\rightarrow2Na_3PO_4+3H_2O\)
8. \(SO_3+2KOH\rightarrow K_2SO_4+H_2O\)
9. \(Al_2S_3+6HCl\rightarrow3H_2S\uparrow+2AlCl_3\)
12. \(2K+2H_2O\rightarrow2KOH+H_2\uparrow\)
13. \(Fe_3O_4+8HCl\rightarrow2FeCl_3+FeCl_2+4H_2O\)
14. \(Ca\left(OH\right)_2+FeSO_4\rightarrow CaSO_4+Fe\left(OH\right)_2\)
Natri hiđroxit: NaOH
Sắt(II) oxit: FeO
Canxi đihiđrophotphat: Ca(H2PO4)2
Lưu huỳnh trioxit: SO3
Đồng(II) hiđroxit: Cu(OH)2
Axit Nitric: HNO3
Magie sunfit: MgSO3
Axit sunfuhiđric: H2S
| Oxit | Axit | Bazơ | Muối | ||||||||||||||||
|
|
|
|
Bazơ: Natri hidroxit: NaOH
Đồng(II)hidroxit: Cu(OH)2
Muối: Canxi đihiđrôphotphat: CaH2PO4
Magie sunfit: MgSO3
Axit; Axit Nitric: HNO3
Axit sunfuhidric: H2S
oxit bazo: Sắt(II) oxit: FeO
\(1) Mg + 2HCl \to MgCl_2 + H_2\\ 2) Mg(OH)_2 \xrightarrow{t^o} MgO + H_2O\\ 3) BaCl_2 + K_2SO_4 \to BaSO_4 + 2KCl\\ 4) 2H_2 + O_2 \xrightarrow{t^o} 2H_2O\\ 5) CuO + H_2SO_4 \to CuSO_4 + H_2O\\ 6) 2Na + 2H_2O \to 2NaOH + H_2\\ 7) 2Al(OH)_3 + 6HCl \to 2AlCl_3 + 3H_2\\ 8) Fe + S \xrightarrow{t^o} FeS\\ 9) Mg + 2HCl \to MgCl_2 + H_2\\ 10) Ca(OH)_2 + CuSO_4 \to Cu(OH)_2 + CaSO_4\\ 11) Na_2O + 2HNO_3 \to 2NaNO_3 + H_2O\\ 12)CO_2 + 2KOH \to K_2CO_3 + H_2O\)
Bài 2 :
1) \(Mg+2HCl\rightarrow MgCl_2+H_2\)
2) \(Mg\left(OH\right)_2\rightarrow\left(t_o\right)MgO+H_2O\)
3) \(BaCl_2+K_2SO_4\rightarrow BaSO_4+2KCl\)
4) \(2H_2+O_2\rightarrow\left(t_o\right)2H_2O\)
5) \(CuO+H_2SO_4\rightarrow CuSO_4+H_2O\)
6) \(2Na+2H_2O\rightarrow2NaOH+H_2\)
7) \(Al\left(OH\right)_3+3HCl\rightarrow2AlCl_3+3H_2O\)
8) \(2Fe+4S\rightarrow\left(t_o\right)2FeS_2\)
10) \(Ca\left(OH\right)_2+Cu\left(NO_3\right)_2\rightarrow Ca\left(NO_3\right)_2+\)\(Cu\left(OH\right)_2\)
11) \(Na_2O+HNO_3\rightarrow NaNO_3+H_2O\)
12) \(CO_2+2KOH\rightarrow K_2CO_3+H_2O\)
Chúc bạn học tốt
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