Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
a.Fe + 2HCl-----> FeCl2 + H2
FeCl2 + 2NaOH----->Fe(OH)2 + 2NaCl
Fe(OH)2+ H2SO4---->FeSO4 + 2H2O
FeSO4 + Ba(NO3)2----->Fe(NO3)2 + BaSO4
b.4Al + 3O2---t*-->2Al2O3
Al2O3 + 6HCl------>2AlCl3 + 3H2O
AlCl3 + 3NaOH----->Al(OH)3 + 3NaCl
2Al(OH)3----t*---> Al2O3 + 3H2O
c.2Cu+ O2--t*->2CuO
CuO + 2HCl---->CuCl2 + H2O
CuCl2 + 2NaOH----->Cu(OH)2 + 2NaCl
Cu(OH)2---t*---> CuO + H2O
d.2Cu+ O2--t*->2CuO
CuO + 2HCl---->CuCl2 + H2O
CuCl2 + 2AgNO3-----> Cu(NO3)2 + 2AgCl
Cu(NO3)2 + 2NaOH-----> Cu(OH)2 + 2NaNO3
Cu(OH)2---t*--->CuO + H2O
CuO + H2---t*--> Cu + H2O
(1) Cu(OH)2 + MgSO4 → CuSO4 + Mg(OH)2
(2) CuSO4 + BaCl2 → CuCl2 + BaSO4
(3) CuCl2 + 2 AgNO3 → Cu(NO3)2 + 2 AgCl
(4) 3Cu(NO3)2 + 2Al → 2Al(NO3)3 + 3Cu
(5) Al(NO3)3 + 3 NaOH → Al(OH)3 + 3 NaNO3
(6) Al(OH)3 → Al2O3 + H2O (nhiệt phân hủy)
Sai sót mong bỏ qua 
1) 2Al+2NaOH+2H2O\(\rightarrow\)2NaAlO2+3H2
2) NaAlO2+CO2+2H2O\(\rightarrow\)NaHCO3+Al(OH)3
3) Al(OH)3+NaOH\(\rightarrow\)NaAlO2+2H2O
4) 2Al(OH)3\(\rightarrow\)Al2O3+3H2O
5) Al2O3+3H2\(\rightarrow\)2Al+3H2O
6) 4Al+3O2\(\rightarrow\)2Al2O3
7) 2Al+ 3FeCl2\(\rightarrow\)2AlCl3+3Fe
8) 4Fe+3O2\(\overset{t^0>450^0C}{\rightarrow}2Fe_2O_3\)
9) Fe2O3+2Al\(\rightarrow\)Al2O3+2Fe
10) Al2O3+2NaOH\(\rightarrow\)2NaAlO2+H2O
11) 2Al+3Fe(NO3)2\(\rightarrow\)2Al(NO3)3+3Fe
12) Al(NO3)3+3NaOH\(\rightarrow\)Al(OH)3+3NaNO3
13) 4Al+3O2\(\rightarrow\)2Al2O3
14) Al2O3+6HCl\(\rightarrow\)2AlCl3+3H2O
15) AlCl3+3NaOH\(\rightarrow\)Al(OH)3+3NaCl
1) 10Al + 36HNO3 → 10Al(NO3)3 + 18H2O + 3N2
Al + 4HNO3 → Al(NO3)3 + 2H2O + NO
Al + 6HNO3 → Al(NO3)3 + 3H2O + 3NO2
8Al + 30HNO3 → 8Al(NO3)3 + 9H2O + 3NH4NO3
2) 5Cu + 12HNO3 → 5Cu(NO3)2 + 6H2O + N2
3Cu + 8HNO3 → 3Cu(NO3)2 + 4H2O + 2NO
Cu + 4HNO3 → Cu(NO3)2 + 2H2O + 2NO2
4Cu + 10HNO3 → 4Cu(NO3)2 + 3H2O + NH4NO3
1.10Al+36HNO3=>10Al(NO3)3+18H2O+3N2
Al+4HNO3=>Al(NO3)3+2H2O+NO
Al+6HNO3=>Al(NO3)3+3H2O+3NO2
8Al+30HNO3=>8Al(NO3)3+9H2O+3NH4NO3
2.5Cu+12HNO3=>5Cu(NO3)2+6H2O+N2(Cái pt này mình k chắc chắn vì mình chưa từng thấy pt nào như vậy cả mong bạn thông cảm )
3Cu+8HNO3=>3Cu(NO3)2+4H2O+2NO
Cu+4HNO3=>Cu(NO3)2+2H2O+2NO2
4Cu+10HNO3=>4Cu(NO3)2+3H2O+NH4NO3(pt này giống pt trên nha bạn)
@Cẩm Vân Nguyễn Thị cô nhận xét bài làm này cho em đc k cô ???
2FeS2+6O2-->Fe2O3+4SO2
2SO2+O2-->2SO3(V2O5,to)
SO3+H2O-->H2SO4
b)2Na+2H2O-->2NaOH+H2
2NaOH+H2SO4-->Na2SO4+2H2O
Na2SO4+Ba(OH)2-->BaSO4+2NaOH
2NaOH+CO2-->Na2CO3+H2O
Na2CO3+2HCl-->2NaCl+H2O+CO2
NaCl+AgNO3-->NaNO3+AgCl
C)
4Al+3O2-->2AL2O3
Al2O3+3H2SO4-->Al2(SO4)3+3H2O
Al2(SO4)3+3Ba(OH)2-->3BaSO4+2Al(OH)3
Al(OH)3+NaOH-->NaAlO2+H2O
NaALO2+H2O+CO2-->Al(OH)3+NaHCO3
Al(OH)3+HCl-->AlCl3+H2O
AlCl3+AgNO3-->Al(NO3)3+AgCl
a) 2FeS2 +11/2O2-----> 4SO2 +Fe2O3
2SO2+O2------> 2SO3
SO3+H2O----- -> H2SO4.
b) 2Na +2H2O-----> 2NaOH+H2
2NaOH+H2SO4----> Na2SO4 +2H2O
Na2SO4+Ba(OH)2----> NaOH +BaSO4
2NaOH+CO2----> Na2CO3+H2O
Na2CO3+2HCl----> 2NaCl+H2O+CO2
NaCl+AgNO3--->NaNO3+AgCl
c) 4Al+3O2--- -> 2Al2O3
Al2O3+3H2SO4 -> Al2(SO4)3+3H2O
Al2(SO4)3+6NaOH-> 2Al(OH)3+3Na2SO4
Al(OH)2+NaOH ----> NaAlO2+2H2O
NaAlO2+2H2O+CO2----> Al(OH)3 +NaHCO3
Al(OH)3+3NaOH----> AlCl3+3NaOH
Alcl3+3AgNO3---> Al(NO3)3+3NaCl
1)
\(2Fe\left(OH\right)_3\) -> \(Fe_2O_3\) + \(3H_2O\)
\(Fe_2O_3\) + \(3CO\) -> \(2Fe\) + \(3CO_2\)
\(2Fe+3Cl_2\) -> \(2FeCl_3\)
\(FeCl_3+3AgNO_3\) -> \(3AgCl\) +\(Fe\left(NO_3\right)_3\)
2)
\(4FeS+7O_2\) -> \(2Fe_2O_3+4SO_2\)
\(Fe_2O_3+3CO\) -> \(2Fe+3CO_2\)
\(2Fe+3Cl\) ->\(2FeCl_3\)
\(2FeCl_3+3Ba\left(OH\right)_2\)->\(3BaCl_2+2Fe\left(OH\right)_3\)
3)
\(2Fe+3Cl_2\) -> \(2FeCl_3\)
\(2FeCl_3+3Ba\left(OH\right)_2\) -> \(3BaCl_2+2Fe\left(OH\right)_3\)
\(2Fe\left(OH\right)_3\) -> \(Fe_2O_3+3H_2O\)
\(Fe_2O_3+3CO\) -> \(2Fe+3CO_2\)
4)
\(2Cu+O_2\) -> \(2CuO\)
\(CuO+2HCl\) -> \(CuCl_2+2H_2O\)
\(CuCl_2+2NaOH\) -> \(2NaCl_2+Cu\left(OH\right)_2\)
\(Cu\left(OH\right)_2+H_2SO_4\) -> \(2H_2O+CuSO_4\)
2AlCl3 --->2Al +3Cl2
4Al+3O2----.2Al2O3
Al2O3+3H2SO4---->Al2(SO4)3+3H2O
Al2(SO4)3+3Mg(OH)2---->3MgSO4+ 2Al(OH)3
Al(OH)3+ HNO3----> Al(NO3)3+ 2H2O
AlCl3 + 3NaOH -> Al(OH)3 + 3NaCl
2Al(OH)3 -> Al2O3 + 3H2O
2Al2O3 \(\underrightarrow{đpnc}\) 4Al + 3O2
b;
4Al + 3O2 -> 2Al2O3
Al2O3 + 2NaOH + 2CO2 + 3H2O -> 2Al(OH)3 + 2NaHCO3
2Al(OH)3 -> Al2O3 + 3H2O
Bạn tự cân bằng các phương trình nhé
Fe+Cl2->FeCl3(đk nhiệt độ)
FeCl3+NaOH->NaCl+Fe(OH)3
Fe(OH)3+H2SO4->Fe2(SO4)3+H2O
Fe(OH)3->Fe2O3+H2O(điều kiện nhiệt độ)
Fe2O3+CO(dư)->Fe+CO2(đk nhiệt độ)
b)Al+Cl2->AlCl3
AlCl3+NaOH(vừa đủ)->Al(OH)3+NaCl
Al(OH)3+H2SO4->Al2(SO4)3+H2O
Al(OH)3->Al2O3+H2O(đk nhiệt độ)
Al2O3->Al+O2(điện phân nóng chảy criolit)
S+O2->SO2(đk nhiệt độ)
SO2+Br2+H2O->H2SO4+HBr
H2SO4+BaO->BaSO4+H2O
H2SO4(đặc)+Cu->CuSO4+SO2+H2O
1.
2Cu + O2 -(to) → 2 CuO
CuO + H2SO4 → CuSO4 + H2O
CuSO4 + BaCl2 → CuCl2 + BaSO4↓
CuCl2 + 2AgNO3 → Cu(NO3)2 + 2AgCl↓
Cu(NO3)2 + NaOH → Cu(OH)2↓ + 2NaNO3
Cu(OH)2 → CuO + H2O
CuO + CO → Cu + CO2
2.
4Al + 3O2 → 2Al2O3
Al2O3 + 6HCl → 2AlCl3 + 3H2↑
AlCl3 + 3NaOH(vừa đủ) → Al(OH)3 + 3NaCl
2Al(OH)3 → Al2O3 + 3H2O
2Al2O3-(đpnc) → 4Al + 3O2↑
2Al + 2NaOH + 2H2O → 2NaAlO2 + 3H2↑