Cu+NANO3+HCl>CuCl2+NaCl+NO+H2O
1) MgCl2 + KOH ⟶ Mg(OH)2 + KCl
2) Cu(OH)2 + HCl ⟶ CuCl2 + H2O
3) Cu(OH)2 + H2SO4 ⟶ CuSO4 + H2O
4) FeO + HCl ⟶ FeCl2 + H2O
5) Fe2O3 + H2SO4 ⟶ Fe2(SO4)3 + H2O
6) Cu(NO3)2 + NaOH ⟶ Cu(OH)2 + NaNO3
7) P + O2 ⟶ P2O5
8) N2 + O2 ⟶ NO
9) NO + O2 ⟶ NO2
10) NO2 + O2 + H2O ⟶ HNO3
Lập PTHH theo các sơ đồ sau
CaCO3+HCl-->CaCl2+H2O+CO3
BaCO3+HCl-->BaCl2+CO2+H2O
K2CO3+HBr-->KBr+CO2+H2O
Na2CO3+HCl-->NaCl+CO2+H2O
MgCO3+HNO3-->Mg(NO3)2+CO2+H2O
NaHCO3+HCl-->NaCl+CO2+H2O
NaHCO3+HNO3-->NaNO3+CO2+H2O
NaHCO3+H2SO4-->Na2SO4+CO2+H2O
Na2CO3+HNO3-->NaNO3+CO2+H2O
CuCO3+HCl-->CuCl2+CO2+H2O
Lập PTHH theo các sơ đồ sau
CaCO3+2HCl-->CaCl2+H2O+CO2
BaCO3+2HCl-->BaCl2+CO2+H2O
K2CO3+2HBr-->2KBr+CO2+H2O
Na2CO3+2HCl-->2NaCl+CO2+H2O
MgCO3+2HNO3-->Mg(NO3)2+CO2+H2O
NaHCO3+HCl-->NaCl+CO2+H2O
NaHCO3+HNO3-->NaNO3+CO2+H2O
2NaHCO3+H2SO4-->Na2SO4+2CO2+2H2O
2Na2CO3+HNO3-->2NaNO3+CO2+H2O
CuCO3+2HCl-->CuCl2+CO2+H2O
CaCO3+2HCl-->CaCl2+H2O+CO2
BaCO3+2HCl-->BaCl2+CO2+H2O
K2CO3+2HBr-->2KBr+CO2+H2O
Na2CO3+2HCl-->2NaCl+CO2+H2O
MgCO3+2HNO3-->Mg(NO3)2+CO2+H2O
NaHCO3+HCl-->NaCl+CO2+H2O
NaHCO3+HNO3-->NaNO3+CO2+H2O
2NaHCO3+H2SO4-->Na2SO4+2CO2+2H2O
Na2CO3+2HNO3-->2NaNO3+CO2+H2O
CuCO3+2HCl-->CuCl2+CO2+H2O
1. Cu➜ CuO➜CuSO4➜CuCl2➜Cu(NO3)2➜Cu(OH)2➜Cu
2.C➜CO2➜CO➜CO2➜NaHCO3➜Na2CO3➜CaCO3➜CO2
3. Cl2➜HCl➜Cl2➜NaCl➜Cl2➜NaClO➜NaCl
4. H2O➜H2➜H2O➜HClO➜Cl2➜KClO➜KCl
1,
2Cu + O2 → 2CuO
CuO + H2SO4 → CuSO4 + H2O
CuSO4 + BaCl2 → CuCl2 + BaSO4
CuCl2 + 2AgNO3 → 2AgCl + Cu(NO3)2
Cu(NO3)2 + 2NaOH → Cu(OH)2 + 2NaNO3
Cu(OH)2 → CuO + H2O
2,
C + O2 → CO2
CO2 + C → 2CO
2CO + O2 → 2CO2
CO2 + NaOH → NaHCO3
2NaHCO3 → Na2CO3 + CO2 + H2O2
Na2CO3 + CaCl2 → 2NaCl + CaCO3
CaCO3 → CaO + CO2
3,
Cl2 + 2H2 → 2HCl
2HCl → 2H2 + Cl2
Cl2 + 2Na → 2NaCl
2NaCl → 2Na + Cl2
Cl2 + 2NaOH → NaClO + NaCl + H2O
NaClO + 2HCl → NaCl + Cl2 + H2O
4,
2H2O → 2H2 + O2
2H2 + O2 → 2H2O
2H2O + Cl2 → 2HClO + 2HCl
2HClO + 2HCl → Cl2 + 2H2O
Cl2 + 2KOH → KCl + KClO
KClO + 2HCl→ 2KCl + H2O
a. P2O5+CaO- - - >Ca3(PO4)2 b.Mg+ Hcl- - -> MgCl2+H2 c. Fe(OH)2+ H2SO4- - -> FeSO4+H2O d. Al(OH)3 +Hcl- - ->AlCl3+ H2O e. NaOH+CuCl2 - - -> NaCl+ Cu(OH)2
a. P2O5+3CaO- - - >Ca3(PO4)2
b.Mg+ 2Hcl- - -> MgCl2+H2
c. Fe(OH)2+ H2SO4- - -> FeSO4+2H2O
d. Al(OH)3 +3Hcl- - ->AlCl3+ 3H2O
e.2 NaOH+CuCl2 - - -> 2NaCl+ Cu(OH)2
1.HCl--->NaCl----->Cl2---->CaCl2----->NaCl------->NaNO3 2. Na---->NaI---->NaCl--->Cl2----->HCl------->CaCl2------>Ca(NO3)2 3. HCl---->H2---->HCl----->CuCl2------>NaCl------>Cl2-----I2 4. KMnO4----->Cl2------>NaCl------>Cl2----->Br2---->I2 5. HCl----->. Co2
1)
NaOH + hCl => NaCl + H2O
NaCl -dpnc-> Na + 1/2Cl2
Cl2 + Ca -to-> CaCl2
CaCl2 + Na2CO3 => CaCO3 + 2NaCl
NaCl + AgNO3 => AgCl + NaNO3
2)
Na + 1/2I2 -to-> NaI
2NaI + Cl2 => 2NaCl + I2
2NaCl + 2H2O -dpcmn-> 2NaOH + H2 + Cl2
H2 + Cl2 -as-> 2HCl
CaO + 2HCl => CaCl2 + H2O
CaCl2 + 2AgNO3 => Ca(NO3)2 + 2AgC;
3)
Fe + 2HCl => FeCl2 + H2
H2 + Cl2 -to-> 2HCl
CuO + 2HCl => CuCl2 + H2O
CuCl2 + Na2CO3 => CuCO3 + 2NaCl
NaCl -dpnc-> Na + 1/2Cl2
Cl2 + 2NaI => 2NaCl + I2
4)
2KMnO4 + 16HCl => 2KCl + 2MnCl2 + 5Cl2 + 8H2O
Na + 1/2Cl2 -to-> NaCl
NaCl -đpnc-> Na + 1/2Cl2
Cl2 + 2NaBr => 2NaCl + Br2
Br2 + 2NaI => 2NaBr + I2
5)
CaCO3 + 2HCl => CaCl2 + CO2 + H2O
Cho các phản ứng :
1. Cl2 + NaBr→ NaCl + Br2
2. Cu + Cl2 → CuCl2
3. Cl2 + NaOH→ NaCl + NaClO + H2O
4. Cl2 + 2FeCl2 → 2FeCl3
5. Cl2 + H2O HCl + HClO
Số phản ứng Clo đóng vai trò làm chất oxi hóa là:
A. 5
B. 2
C. 3
D. 4
Lập PTHH của các phản ứng sau:
a. M g + O 2 → M g O
b. F e + C l 2 → F e C l 3
c. N a O H + C u C l 2 → C u ( O H ) 2 + N a C l
d. H C l + M g → M g C l 2 + ?
e. F e 2 O 3 + H C l → F e C l 3 + H 2 O
f. A l + O 2 → A l 2 O 3
Lập PTHH theo các sơ đồ sau :
1) CuCl2 + NaOH - -> Cu(OH)2 + NaCl
2) Fe (NO3)3 + NaOH - -> Fe(OH)3 + NaNO3
3) P2O5 + H2O - -> H3PO4
4) Al + H2SO4 - -> Al2(SO4)3 + H2
1) CuCl2 + 2NaOH - -> Cu(OH)2 + 2NaCl
2) Fe (NO3)3 + 3NaOH - -> Fe(OH)3 + 3NaNO3
3) P2O5 + 3H2O - -> 2H3PO4
4) 2Al + 3H2SO4 - -> Al2(SO4)3 + 3H2
1) CuCl2 + 2NaOH - -> Cu(OH)2 + 2NaCl
2) Fe(NO3)3 + 3NaOH - -> Fe(OH)3 + 3NaNO3
3) P2O5 + 3H2O - -> 2H3PO4
4) 2Al + 3H2SO4 - -> Al2(SO4)3 + 3H2
1.Lập phương trình hóa học:
a,Al+CuCl2 -> AlCl3+Cu
b,Na+HCl -> NaCl+H2
c,N2O5+H2O -> HNO3
d,Al(OH)3 -> Al2O3+H2O
e,Fe2O3+H2 -> Fe + H2O
Cái này cân bằng à:
a) 2Al+ 3CuCl2 -> 2AlCl3 +3Cu
b) 2Na + 2HCl -> 2NaCl + H2
c) N2O5 + H2O-> 2HNO3
d) 2Al(OH)3 -t0-> Al2O3 +3H2O
e) Fe2O3 +3H2 -t0-> 2Fe +3H2O
a,
2Al | + | 3CuCl2 | → | 2AlCl3 | + |
3Cu |
b,
2HCl | + | 2Na | → | H2 | + | 2NaCl |
c,
H2O | + | N2O5 | → | 2HNO3 |
d,
2Al(OH)3 | → | Al2O3 | + |
3H2O |
e,
3Fe2O3 | + | H2 | → | H2O | + | 2Fe3O4 |
Mình xin lỗi câu e là
3Fe2O3 | + | H2 | → | H2O | + | 2Fe3O4 |