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2) 2KMnO4 + 16HCl = 2KCl + 2MnCl2 + 5Cl2 + 8H2O
Cl2 + H2 = 2HCl ( điều kiện ánh sáng )
2HCl + Fe = FeCl2 + H2
FeCl2 + 2AgNO3 = 2AgCl + Fe(NO3)2
2AgCl = 2Ag + Cl2
1) 3Cl2+6KOH->KClO3+5KCl+3H2O
2) Ca+Cl2->CaCl2
3) Cl2+Ca(OH)2->CaOCl2+H2O
4) NaClO+2HCl->NaCl+Cl2+H2O
5) Cl2+2NaOH->NaCl+NaClO+H2O
6) 2NaCl+2H2O->2NaOH+H2+Cl2
7) Cl2+2NaOH->NaCl+NaClO+H2O
8) 2NaCl+2H2O->2NaOH+Cl2+H2
9) 2NaClO+H2O+CO2->Na2CO3+Cl2+H2O
10) NaHCO3+HCl->NaCl+CO2+H2O
11) CO2+NaAlO2+2H2O->NaHCO3+Al(OH)3
12) CaCO3->CaO+CO2
13) 2CaOCl2+CO2+H2O->CaCO3+CaCl2+H2O
14) CaCl2+Na2CO3->2NaCl+CaCO3
15) CaCl2+Na2CO3->2NaCl+CaCO3
16) 2CaOCl2->2CaCl2+O2
17) CaF2+H2SO4->CaSO4+2HF
18) 4HF+SiO2->SiF4+2H2O
a) MnO2+4HCl ----> Cl2+2H2O+MnCl2 --
(2)3Cl2+2Fe--> 2FeCl3 --
(3)FeCl3+3NaOH--> 3AgCl+Fe(OH)3
b) HCl+NaOH ----> NaCl+H2O --
(2)2NaCl--> Cl2+2Na --
(3)Cl2+Cu--> CuCl2
c) 2HCl+Zn ----> ZnCl2+H2 --
(2)ZnCl2+AgNO3--> AgCl+Zn(NO3)2 --
(3)2AgCl+Cu(NO3)2--> CuCl2+2AgNO3
d) 2NaCl ----> Cl2+2Na --
(2)Cl2+H2--> 2HCl --
(3)6HCl+Fe2O3--> 2FeCl3+3H2O
MnO2+HCl--->MnCl2+H2O+Cl2
Cl2+Fe-->FeCl3
FeCl3+AgNO3-->Fe(NO3)3+AgCl
b)
HCl+Na-->NaCl+H2
NaCL+H2O-->NaOH+H2+CL2
Cl2+Cu-->CuCl2
c)
HCl+Zn-->ZnCl2+H2
ZnCL2+AgNO3-->AgCl+Zn(NO3)2
| 2AgNO3 | + | CuCl2 | → | 2AgCl | + | Cu(NO3)2 |
d)
NaCl+H2O-->NaOH+Cl2+H2
Cl2+H2-->HCl
HCl+Fe2O3-->FeCl3+H2O
pt (5) : 2NaCl ( trong nước Javen) ---- điện phân nóng chảy --> 2Na +Cl2
pt (4) tớ thấy hơi vô lý
.
a,
Na2S + CuSO4 ➝ CuS↓ + Na2SO4
CuS + 4H2SO4 ( d,n ) ➝ CuSO4 + 4SO2 + 4H2O
SO2 + Br2 + 2H2O ➝ 2HBr + H2SO4
H2SO4 + 2NaOH ➝ Na2SO4 + H2O
Na2SO4 + BaCl2 ➝ 2NaCl + BaSO4↓
2NaCl (tinh the) + H2SO4 ( d,n) ➝ Na2SO4 + 2HCl
4HCl + MnO2 ➝ MnCl2 + Cl2 + 2H2O
b/ 2FeS2 + 11/2 O2 => Fe2O3 + 4SO2
2SO2 + O2 => (to,V2O5) 2SO3
SO3 + H2O => H2SO4
H2SO4 + CuO => CuSO4 + H2O
CuSO4 + BaCl2 => BaSO4 + CuCl2
(1) 2KMnO4 =nhiệt độ=> K2MnO4 + MnO2 + O2
(2) O2 + 4Fe(OH)2 =nhiệt độ=> 2Fe2O3 + 4H2O
(3) Fe2O3 + 6HCl => 2FeCl3 + 3H2O
(4) FeCl3 + 3NaOH => Fe(OH)3 + 3NaCl
(5) 2KMnO4 + 16HCl => 2KCl + 2MnCl2 + 5Cl2 + 8H2O
(6) Cl2 + 2Na =nhiệt độ=> 2NaCl
(7) NaCl + AgNO3 => AgCl + NaNO3
(8) 2AgCl =nhiệt độ=> 2Ag + Cl2
2NaCl----đpnc----> 2Na+Cl2
Cl2+2NaBr----> 2NaCl+Br2
Br2+2NaI-----> 2NaBr+I2
2K+I2--to-->2 KI
\(2NaCl\rightarrow2Na+Cl_2\uparrow\)
\(Cl_2+HBr\rightarrow2HCl+Br_2\)
\(2NaI+Br_2\rightarrow2NaBr+I_2\downarrow\)
\(2K+I_2\rightarrow2KI\)
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