Mỗi cái chỗ 5 ví dụ - kl,pk + o2 -> oxit - kl + pk -> muối - kl + h2o -> - kl + axit -> muối hoá trị thấp + h2 - kl + axit -> muối oxit cao + sản phẩm khử + nước -kl + dd muối -> muối mới + kl mới - oxit kl + axit -> muối + h2o - bazo + axit -> muối + h2o - bazơ + dd muối -> muối mới + bazo mới - muối + axit -> muối mới + axit mới - muối + muối -> 2 muối mới
2 câu trả lời
Đáp án:
Cu+ 1/2O2 (t*)-> CuO
Zn+ 1/2O2 (t*)-> ZnO
Mg+ 1/2O2 (t*)-> MgO
3Fe+ 2O2 (t*)-> Fe3O4
4Al+ 3O2 (t*)-> 2Al2O3
- PK:
S+ O2 (t*)-> SO2
C+ O2 (t*)-> CO2
Si+ O2 (t*)-> SiO2
H2+ 1/2O2 (t*)-> H2O
N2+ O2 (3000 độ C, tia lửa điện)-> 2NO
2
Fe+ S (t*)-> FeS
3/2Cl2+ Fe (t*)-> FeCl3
Al+ 3/2Cl2 (t*)-> AlCl3
Mg+ Br2 -> MgBr2
Cu+ F2 (t*)-> CuF2
3)
Na+ H2O -> NaOH+ 1/2H2
K+ H2O -> KOH+ 1/2H2
Li+ H2O-> LiOH+ 1/2H2
Ba+ 2H2O -> Ba(OH)2+ H2
Ca+ 2H2O -> Ca(OH)2+ H2
4
Fe+ 2HCl -> FeCl2+ H2
Fe+ H2SO4 -> FeSO4+ H2
Mg+ 2HCl -> MgCl2+ H2
2Al+ 6HCl -> 2AlCl3+ 3H2
Mg+ H2SO4 -> MgSO4+ H2
5
Cu+ 2H2SO4 (t*)-> CuSO4+ SO2+ 2H2O
Mg+ 2H2SO4 (t*)-> MgSO4+ SO2+ 2H2O
Al+ 4HNO3 (t*)-> Al(NO3)3+ NO+ 2H2O
Fe+ 4HNO3 (t*)-> Fe(NO3)3+ NO+ 2H2O
2Fe+ 6H2SO4 (t*)-> Fe2(SO4)3+ 3SO2+ 6H2O
1)
- KL:
Cu+ 1/2O2 (t*)-> CuO
Zn+ 1/2O2 (t*)-> ZnO
Mg+ 1/2O2 (t*)-> MgO
3Fe+ 2O2 (t*)-> Fe3O4
4Al+ 3O2 (t*)-> 2Al2O3
- PK:
S+ O2 (t*)-> SO2
C+ O2 (t*)-> CO2
Si+ O2 (t*)-> SiO2
H2+ 1/2O2 (t*)-> H2O
N2+ O2 (3000 độ C, tia lửa điện)-> 2NO
2)
Fe+ S (t*)-> FeS
3/2Cl2+ Fe (t*)-> FeCl3
Al+ 3/2Cl2 (t*)-> AlCl3
Mg+ Br2 -> MgBr2
Cu+ F2 (t*)-> CuF2
3)
Na+ H2O -> NaOH+ 1/2H2
K+ H2O -> KOH+ 1/2H2
Li+ H2O-> LiOH+ 1/2H2
Ba+ 2H2O -> Ba(OH)2+ H2
Ca+ 2H2O -> Ca(OH)2+ H2
4)
Fe+ 2HCl -> FeCl2+ H2
Fe+ H2SO4 -> FeSO4+ H2
Mg+ 2HCl -> MgCl2+ H2
2Al+ 6HCl -> 2AlCl3+ 3H2
Mg+ H2SO4 -> MgSO4+ H2
5)
Cu+ 2H2SO4 (t*)-> CuSO4+ SO2+ 2H2O
Mg+ 2H2SO4 (t*)-> MgSO4+ SO2+ 2H2O
Al+ 4HNO3 (t*)-> Al(NO3)3+ NO+ 2H2O
Fe+ 4HNO3 (t*)-> Fe(NO3)3+ NO+ 2H2O
2Fe+ 6H2SO4 (t*)-> Fe2(SO4)3+ 3SO2+ 6H2O
6)
Fe+ CuSO4 -> FeSO4+ Cu
Mg+ 2AgNO3 -> Mg(NO3)2+ 2Ag
Mg+ ZnCl2 -> MgCl2+ Zn
Zn+ CuCl2 -> ZnCl2+ Cu
Fe+ 2AgNO3 -> Fe(NO3)2+ 2Ag
7)
CuO+ 2HCl -> CuCl2+ H2O
FeO+ 2HCl -> FeCl2+ H2O
MgO+ 2HCl -> MgCl2+ H2O
ZnO+ 2HCl -> ZnCl2+ H2O
CaO+ 2HCl -> CaCl2+ H2O
8)
NaOH+ HCl -> NaCl+ H2O
KOH+ HCl -> KCl+ H2O
Ba(OH)2+ 2HCl -> BaCl2+ 2H2O
Ca(OH)2+ H2SO4 -> CaSO4+ 2H2O
Fe2O3+ 6HCl -> 2FeCl3+ 3H2O
9)
2NaOH+ CuSO4 -> Na2SO4+ Cu(OH)2
Ba(OH)2+ CuSO4 -> BaSO4+ Cu(OH)2
Na2CO3+ Ca(OH)2 -> CaCO3+ 2NaOH
2KOH+ FeCl2 -> Fe(OH)2+ 2KCl
Ba(OH)2+ K2CO3 -> BaCO3+ 2KOH
10)
AgNO3+ HCl ->AgCl+ HNO3
NaCl+ H2SO4 đ (t*)-> NaHSO4+ HCl
CaF2+ H2SO4 đ (t*)--> CaSO4+ 2HF
BaCl2+ H2SO4 -> BaSO4+ 2HCl
Na2SiO3+ 2HCl -> 2NaCl+ H2SiO3
11)
CaCl2+ Na2CO3 -> CaCO3+ 2NaCl
Ca(NO3)2+ K2CO3 -> CaCO3+ 2KNO3
BaCl2+ Na2SO4 -> BaSo4+ 2NaCl
BaCl2+ Na2SO3 -> BaSO3+ 2NaCl
CaCl2+ K2CO3 -> CaCO3+ 2KCl