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a. MnO2 +4HCl→Cl2+2H2O+MnCl2
2Fe+3Cl2→2FeCl3
FeCl3+3NaOH → Fe(OH)3 +3NaCl
Fe(OH)3+3NaCl→ FeCl3 +3NaOH
FeCl3+3AgNO3→3AgCl+Fe(NO3)3
2AgCl→Cl2+2Ag
b. 2KMnO4 +16HCl→ 5Cl2+8H2O+2KCl+2MnCl2
Cl2+H2→2HCl
CuO+2HCl→CuCl2+H2O
CuCl2+Ba(OH)2→ BaCl2+Cu(OH)2
BaCl2+H2SO4→ BaSO4.+2HCl
c.2 NaCl+H2SO4→ 2HCl +Na2SO4
2HCl→ Cl2 +H2
3Cl2+2Fe→ 2FeCl3
FeCl3+3NaOH →3NaCl +Fe(OH)3
2NaCl+2H2O→2NaOH+Cl2+H2
NaOH+HCl→NaCl+H2O
2NaCl→Cl2+2Na
Cl2+Ca →CaCl2
CaCl2+2AgNO3→2AgCl +Ca(NO3)2
2AgCl→2Ag+Cl2
a/
\(2HCl\underrightarrow{^{đpdd}}H_2+Cl_2\)
\(3Cl_2+2Fe\underrightarrow{^{to}}2FeCl_3\)
\(FeCl_3+3NaOH\rightarrow3NaCl+Fe\left(OH\right)_3\)
\(2NaCl+H_2SO_4\underrightarrow{^{to}}Na_2SO_4+2HCl\)
\(HCl+CuO\rightarrow CuCl_2+H_2O\)
\(CuCl_2+AgNO_3\rightarrow AgCl+Cu\left(NO_3\right)2\)
b/
\(2HCl\underrightarrow{^{đpdd}}H_2+Cl_2\)
\(Cl_2+2Na\underrightarrow{^{to}}2NaCl\)
\(2NaCl+H_2SO_{4_{dac}}\underrightarrow{^{to}}Na_2SO_4+2HCl\)
\(2HCl+Fe\rightarrow FeCl_2+H_2\)
c/
\(MnO_2+4HCl_đ\underrightarrow{^{to}}MnO_2+Cl_2+2H_2O\)
\(Cl_2+2K\underrightarrow{^{to}}2KCl\)
\(2KCl+H_2SO_4\underrightarrow{^{to}}K_2SO_4+2HCl\)
\(2HCl\underrightarrow{^{đpdd}}H_2+Cl_2\)
\(Cl_2+2NaBr\rightarrow2NaCl+Br_2\)
\(Br_2+2NaI\rightarrow NaBr+I_2\)
d/
\(2KMnO_4+16HCl_đ\underrightarrow{^{to}}2KCl+2MnCl_2+5Cl_2+8H_2O\)
\(Cl_2+H_2\underrightarrow{^{as}}2HCl\)
\(Fe_2O_3+6HCl\rightarrow2FeCl_3+3H_2O\)
\(FeCl_3+3AgNO_3\rightarrow3AgCl+Fe\left(NO_3\right)_3\)
Câu 1 :
PTHH :
\(2KMnO_4+3H_2SO_4+10HCl\rightarrow5Cl_2+8H_2O+2MnSO_4+K_2SO_4\)
\(Cl_2+2KOH\rightarrow H_2O+KCl+KClO\)
\(KClO+2HCl\rightarrow KCl+H_2O+Cl_2\)
\(2KCl+2H_2O\rightarrow2KOH+Cl_2+H_2\)
\(C_2H_4Br_2+2KOH\rightarrow C_2H_2+2H_2O+2KBr\)
\(2KBr+Cl_2\rightarrow2KCl+Br_2\)
\(Br_2+2KI\rightarrow I_2+2KBr\)
\(I_2+2K\rightarrow2KI\)
PTHH :
2KMnO4+3H2SO4+10HCl→5Cl2+8H2O+2MnSO4+K2SO4
Cl2+2KOH→H2O+KCl+KClO
KClO+2HCl→KCl+H2O+Cl2
2KCl+2H2O→2KOH+Cl2+H2
C2H4Br2+2KOH→C2H2+2H2O+2KBr
2KBr+Cl2→2KCl+Br2
Br2+2KI→I2+2KBr
I2+2K→2KI
2)
Cl2+2Na--->2NaCl
2NaCl+2H2O- điện phân dd->2NaOH+H2+Cl2
Cl2+Ca(OH)2 --30oC-->CaOCl2 +H2O
| 2CaOCl2 | → | O2 | + | 2CaCl2 |
CaCl2 +2AgNO3-->2AgCl+Ca(NO3)2
| 2AgCl | → | 2Ag | + | Cl2 |
Cl2+2NaOh-->NaCl+NaClO+H2O
a) HCl + PbO2 → PbCl2 + Cl2 + H2O
H+Cl- + Pb4+O22- → Pb2+Cl2- + Cl20 + H2+O2-
1 x 1 x | 2Cl- → Cl20 + 2e Pb4+ + 2e → Pb2+ |
⇒ 2Cl- + Pb4+ → Pb2+ + Cl20
2HCl + PbO2 → PbCl2 + Cl2 + H2O
b) KMnO4 + HCl → KCl + MnCl2 + Cl2 + H2O
K+Mn7+O42- + H+Cl- → K+Cl- + Mn2+Cl2- + Cl20 + H2+O2-
5 x 2 x | 2Cl- → Cl20 + 2e Mn7+ + 5e → Mn2+ |
⇒ 10Cl- + 2Mn7+ → 2Mn2+ + 5Cl20
2KMnO4 + 16HCl → 2KCl + 2MnCl2 + 5Cl2 + 8H2O
a) 4HCl + MnO2 --> MnCl2 + Cl2 +2H2O
2Fe + 3Cl2 ---> 2FeCl3
FeCl3 + 3NaOH --> Fe(OH)3 + 3NaCl
NaCl + H2SO4 đ---> NaHSO4 + HCl
2HCl + CuO ---> CuCl2 + H2O
CuCl2 +2AgNO3 ---> Cu(NO3)2 + 2AgCl
b) 2KMnO4 + 16HCl ---> 2KCl + 2MnCL2 +5Cl2 +8H2O
Cl2 + H2--->2HCl
6HCl + Fe2O3 ---> 2FeCl3 +3H2O
FeCl3 + 3AgNO3 --> Fe(NO3)3 +3AgCl
2AgCl --to---> 2Ag + Cl2
Cl2 + 2NaBr ---> 2NaCl + Br2
Br2 + 2NaI --> 2NaBr + I2
I2 +Zn --to--> ZnI2
ZnI2 + 2NaOH --> Zn(OH)2 +2NaI
c) 2KCl ---dpnc--> 2K + Cl2
Cl2 + 2KOH --> KCl + KClO + H2O
4KClO --> KClO3 +3 KCl
4KClO3 ---> 3KClO4 + KCl
3KClO4 + 8Al ---> 4Al2O3 + 3KCl
KCl + AgNO3 --> AgCl + KNO3
d) 3Cl2 + 6KOH ---> KClO3 + 5KCl +3H2O
2KClO3 ---> 2KCl +#O2
2KCl --> 2K + Cl2
2Cl2 + Ca(OH)2 ---> CaCl2 +Ca(ClO)2
Ca(ClO)2 ---> CaCl2 + O2
CaCl2 ---> Ca + Cl2
Cl2 ra O2 ????
e)6HCl + KClO3 ---> KCl +3Cl2 +3H2O
3Cl2 +6KOH --> 5KCl + KClO +3 H2O
2KClO3 --> 2KCl + 3O2
2KCl --> 2K + CL2
CL2 +H2 --> 2HCl
2HCl +Fe--> FeCl2 + H2
Cl2 + 2FeCl2 -->2FeCl3
FeCl3 +3NaOH --> Fe(OH)3 +3NaCl
b, PTHH :
\(2KI+SO_3\rightarrow2I+K_2SO_3\)
\(I_2+H_2\rightarrow2HI\)
\(2HI+Cl_2\rightarrow2HCl+I_2\)
\(HCl+KOH\rightarrow KCl+H_2O\)
\(F_2+2KCl\rightarrow Cl_2+2KF\)
\(Cl_2+H_2O\rightarrow HClO+HCl\)
\(HClO\rightarrow HCl+O_2\)
\(4HCl+O_2\rightarrow2H_2O+2Cl_2\)
\(Cl_2+2NaBr\rightarrow2NaCl+Br_2\)
\(Br_2+2NaI\rightarrow2NaBr+I_2\)
a, Cl2 + 2Na -> (t°) 2NaCl
2NaCl + H2SO4 -> Na2SO4 + 2HCl
4HCl + MnO2 -> MnCl2 + 2H2O + Cl2
Ca + Cl2 -> (t°) CaCl2
b, 4HCl + MnO2 -> MnCl2 + 2H2O + Cl2
2Fe + 3Cl2 -> (t°) 2FeCl3
FeCl3 + 3NaOH -> Fe(OH)3 + 3NaCl
2NaCl + H2SO4 -> Na2SO4 + 2HCl
c, MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2
3Cl2 + 6KOH (đặc nóng) -> 5KCl + KClO3 + 3H2O
2KCl + H2SO4 -> K2SO4 + 2HCl
4HCl + MnO2 -> MnCl2 + 2H2O + Cl2
2Cl2 + 2Ca(OH)2 -> CaCl2 + Ca(OCl)2 + 2H2O
d, 16HCl + 2KMnO4 -> 5Cl2 + 8H2O + 2KCl + 2MnCl2
3Cl2 + 6KOH (đặc nóng) -> 5KCl + KClO3 + 3H2O
2KCl -> (đpnc) 2K + Cl2
Cl2 + 2NaBr -> 2NaCl + Br2
Br2 + 2NaI -> 2NaBr + I2