Fe\(_x\)O\(_y\) + H\(_2\)SO\(_4\) \(\rightarrow\)Fe(NO\(_3\))\(_3\) + S + H\(_2\)O
Fe\(_x\)O\(_y\) + H\(_2\)SO\(_4\) \(\rightarrow\)Fe\(_2\)(SO\(_4\))\(_3\) + SO\(_2\) + H\(_2\)O
2FexOy + (6x-2y)H2SO4 -> xFe2(SO4)3 + (3x-2y)SO2 + (6x-2y)H2O
O\(_2\)\(\underrightarrow{ }\)Fe\(_3\)O\(_4\)\(\underrightarrow{ }\)Fe\(\underrightarrow{ }\)FeCl\(_2\)
\(\downarrow\)
H\(_2\)
(1)O\(_2\)+ \(\rightarrow\)Fe\(_3\)O\(_4\)
2O2+3Fe-to>Fe3O4
Fe3O4+4H2-to>3Fe+4H2O
2Fe+3Cl2-to>2Fecl3
Fe+2HCl->Fecl2+H2
\(3Fe+2O_2\rightarrow\left(t^o\right)Fe_3O_4\)
\(Fe_3O_4+4H_2\rightarrow\left(t^o\right)3Fe+4H_2O\)
\(Fe+2HCl\rightarrow FeCl_2+H_2\)
Lập pt hóa học phản ứng
a)...+Fe\(\rightarrow\) FeSO\(_4\)+Cu
b)ZnSO\(_4\)+NaOH\(\rightarrow\) Na\(_2\)SO\(_4\)+...
c)...+AgNO\(_3\)\(\rightarrow\)AgCl+HNO\(_3\)
d)BaSO\(_3\)\(\rightarrow\)...+SO\(_2\)
e)Na\(_2\)CO\(_3\)+Ca(NO\(_3\))\(_{\rightarrow}\)NaNO\(_3\)+...
a) CuSO4+Fe→FeSO4+Cu
b) ZnSO4+ 2NaOH→Na2SO4+ Zn(OH)2
c) HCl+AgNO3→AgCl+HNO3
d) BaSO3→ BaO+SO2
e)Na2CO3+Ca(NO3)2→ 2NaNO3+ CaCO3
Cân bằng phương trình sau:
a, Zn + O\(_2\)-->ZnO
b, SO\(_2\) + O\(_2\)-->SO\(_3\)
c, Ca+H\(_2\)S0\(_4\)--->CaSO\(_4\)+H\(_2\)O
d, HCl+MnO\(_2\)--->MnCl\(_2\)+Cl\(_2\)+H\(_2\)O
e, Ba(OH)\(_2\)+HCl--->BaCl\(_2\)+H\(_2\)O
f, Fe+H\(_2\)PO\(_{4đ.n}\)--->Fe\(_2\)(SO\(_4\))\(_3\)+SO\(_2\)+H\(_2\)O
g, Fe\(_x\)O\(_y\)+CO--->Fe+CO\(_2\)
h, K\(_2\)O+H\(_3\)PO\(_4\)--->K\(_3\)PO\(_4\)+H\(_2\)O
i, C\(_x\)H\(_y\)+O\(_2\)--->CO\(_2\)+H\(_2\)O
k, FeS\(_2\)+O\(_2\)---> Fe\(_2\)O\(_3\)+SO\(_2\)
a> 2Zn+O2-->2ZnO ( tỉ lệ hệ số là 2:1:2)
b>2:1:2
d>4:1:1:1:2
e>1:2:1:2
f>2:6:1:3:6
k> 2:11/2:1:4
h> 3K2O+ 2H3PO4-->2K3PO4+ 3H2O
g> FexOy + yCO--->xFe+ yCO2
i>CxHy+ (x+y/2)o2--> x CO2+yH2O
hãy thực hiện chuyển đổi hóa học sau:
a) K→K\(_2\)O→KOH
b) P→P\(_2\)O\(_3\)→H\(_3\)
c) Fe→Fe\(_3\)O\(_4\)→Fe→FeCL\(_2\)
\(a,4K+O_2\rightarrow2K_2O\\ K_2O+H_2O\rightarrow2KOH\\ b,4P+3O_{2\left(thiếu\right)}\rightarrow2P_2O_3\\ P_2O_3+3H_2O\rightarrow2H_3PO_3\\ c,3Fe+2O_2\rightarrow\left(t^o\right)3Fe_3O_4\\ Fe_3O_4+8Al\rightarrow\left(t^o\right)9Fe+4Al_2O_3\\ Fe+2HCl\rightarrow FeCl_2+H_2\)
Viết PTPƯ thực hiện dãy chuyển hóa sau. Phân loại mỗi PƯHH đó
a/ KMnO\(_4\) -> O\(_2\) -> Fe\(_3\)O\(_4\) -> Fe -> FeSO\(_4\)
b/ Ba -> BaO -> Ba(OH)\(_2\)
c/ S -> SO\(_2\) -> SO\(_3\) -> H2SO\(_4\)
TK :
https://sachgiaibaitap.com/sach_giai/giai-sach-bai-tap-hoa-lop-8-bai-38-luyen-tap-chuong-5/#gsc.tab=0
a) KMnO4 (to) → K2MnO4 + MnO2 + O2 (phản ứng phân huỷ)
Fe + O2 (to) → Fe3O4 (phản ứng hoá hợp)
Fe3O4 + H2 (to) → Fe + H2O (phản ứng thế)
Fe + H2SO4 → FeSO4 + H2 (phản ứng thế)
b) Ba + O2 (to) → BaO (phản ứng hoá hợp)
BaO + H2O → Ba(OH)2 (phản ứng hoá hợp)
c) S + O2 (to) → SO2 (phản ứng hoá hợp)
SO2 + O2 (to) → SO3 (phản ứng hoá hợp)
SO3 + H2O → H2SO4 (phản ứng hoá hợp)
(các phương trình trên chưa cân bằng)
1.KOH + \(Al_2\left(SO_4\right)_3\) \(\rightarrow\) \(K_2SO_4\) + \(Al\left(OH\right)_3\)
2.KMnO\(_4\) \(\rightarrow\)K\(_2\)MnO\(_4\) + MnO\(_2\) + O\(_2\)
3.Fe\(_3\)O\(_4\) + CO \(\rightarrow\) Fe + CO\(_2\)
4. KClO\(_3\) \(\rightarrow\) KCL + O\(_2\)
5. Al(OH)\(_3\) + H\(_2\)SO\(_4\) \(\rightarrow\) Al\(_2\)(SO\(_4\))\(_3\) + H\(_2\)O
1.6KOH + Al2(SO4)3 → 3K2SO4 + 2Al(OH)3
2.2KMnO4 →K2MnO4 + MnO2 + O2
3.Fe3O4 + 4CO → 3Fe + 4CO2
4. 2KClO3→ 2KCl + 3O2
5. 2Al(OH)3 + 3H2SO4→ Al2(SO4)3 + 3H2O
Diệp Tử Vân đề yêu cầu cân bằng hả bạn :))
hãy phân loại, đọc tên:
Ca(H\(_2\)PO\(_4\))\(_2\)
NaHSO\(_4\)
CaCO\(_3\)
Fe(OH)\(_2\)
Mg(NO\(_3\))\(_2\)
FeS
NaCL
BaCL\(_2\)
CuSO\(_4\)
Cu(HSO\(_4\))\(_2\)
Cu(H\(_2\)PO\(_4\))\(_2\)
Ca(H2PO4)2: muối axit: canxi đihiđrophotphat
NaHSO4: muối axit: natri hiđrosunfat
CaCO3: muối trung hòa: canxi cacbonat
Fe(OH)2: sắt (II) hiđroxit
Mg(NO3)2: muối trung hòa: magie nitrat
FeS: muối trung hòa: sắt (II) sunfua
NaCl: muối trung hòa: natri clorua
BaCl2: muối trung hòa: bari clorua
CuSO4: muối trung hòa: đồng (II) sunfat
Cu(HSO4)2: muối axit: đồng (II) hiđrosunfat
Cu(H2PO4)2: muối axit: đồng (II) đihiđrophotphat
CH\(_4\) + O\(_2\) ----->.......
P + O\(_2\)------>........
........+.........-------> H\(_2\)SO\(_4\)
........+........------->H\(_3\)PO\(_4\)
KMnO\(_4\) -------->.........+........+.......
KClO\(_3\)-------->.........+.......
CH4+2 O2 ---to-->.......CO2+2H2O
4P + 5O2--to---->...2P2O5.....
SO3+H2O...-------> H2SO4
P2O5+3H2O->2H3PO4
2KMnO4 ---to----->......K2MNO4...+......MnO2..+..O2.....
2KClO3-------->..2KCl.......+...3.O2...
\(CH_4+2O_2\underrightarrow{t^o}CO_2+2H_2O\\ 4P+5O_2\underrightarrow{t^o}2P_2O_5\\ P_2O_5+3H_2O\rightarrow2H_3PO_4\\ 2KMnO_4\underrightarrow{t^o}K_2MnO_4+MnO_2+O_2\\ 2KCl\xrightarrow[xtMnO_2]{t^o}2KCl+3O_2\)