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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
Bài 1: 4Na+O2->2Na2O
(2): Na2O +H2O -> 2NaOH
(3): 2NaOH + BaCl2-> 2NaCl + Ba(OH)2
(4): NaCl + AgNO3-> AgCl + NaNO3
phần 2:
(1) 2NaOH + CO2-> Na2CO3 + H2O
(2) Na2CO3 +CaCl2- > CaCO3 + 2NaCl
(3) CaCO3-t0-> CaO + CO2
(4) CaO +H2O -> Ca(OH)2
(5) Ca(OH)2 + BaCl2-> Ba(OH)2 + CaCl2
Bài 1:
1) 4Na + O2 --to--➢ 2Na2O
Na2O + H2O → 2NaOH
2NaOH + 2HCl → 2NaCl + H2O
NaCl + AgNO3 → NaNO3 + AgCl
2) 2NaOH + CO2 → Na2CO3 + H2O
Na2CO3 + CaCl2 → 2NaCl + CaCO3
CaCO3 --to--➢ CaO + CO2
CaO + H2O → Ca(OH)2
Ca(OH)2 + 2HCl → CaCl2 + 2H2O
CaCO3+HCl-->CaCl2+CO2+H2O
CaCl2+Na2CO3-->CaCO3+NaCl
CaCO3-->CaO+CO2
CaO+H2O-->Ca(OH)2
Ca(OH)2+HNO3-->Ca(NO3)2+H2O
E)
Cu+O2-->CuO
CuO+H2-->Cu+H2O
CuO+..->Cu(Oh)2
Cu(Oh)2+HCl-->CuCl2+H2o
G)Na2SO3+CaCL2-->CaSO3+NaCl
S+O2-->SO2
SO2+H2O-->H2SO3
H2SO3+Ca--->CaSO3+H2
CaSO3+HCl-->CaCL2+SO2+H2O
S8+O2-->SO3
SO3+H2O-->H2SO4
H2SO4+Fe2O3-->Fe2(SO4)3+H2
a)SO2,Na2O,CaO,CO2,BaO
SO2+H2O->H2SO3
Na2O+H2O->2NaOH
CaO+H2O->Ca(OH)2
CO2+H2O->H2CO3
BaO+H2O->Ba(OH)2
b)CuO,Na2O,CaO,Al2O3,BaO
CuO+2HCl->CuCl2+H2O
Na2O+2HCl->2NaCl+H2O
CaO+2HCl->CaCl2+H2O
Al2O3+6HCl->2AlCl3+3H2O
BaO+2HCl->BaCl2+H2O
c)SO2,CO2
SO2+2NaOH->Na2SO3+H2O
CO2+2NaOH->Na2CO3+H2O
Bài 2:
a)C+O2->CO2
CO2+CaO->CaCO3
CaCO3+2HCl->CaCl2+CO2+H2O
2CO2+Ca(OH)2->Ca(HCO3)2
b)S+O2->SO2
2SO2+O2->2SO3
SO3+H2O->H2SO4
H2SO4+K2SO3->K2SO4+SO2+H2O
SO2+H2O->H2SO3
C+O2-->CO2
CO2+ Na2O--->Na2CO3
Na2CO3+H2O--->NaHCO3+NaOH
ko có công thức là Na2HCO3 nha
NaHCO3+NaOH----> Na2CO3 +H2O
Na2CO3--->CO2+Na2O
a) 2Ca + O2 -to-> 2CaO
CaO + H2O --> Ca(OH)2
Ca(OH)2 + CO2 --> CaCO3 + H2O
CaCO3 + CO2 + H2O --> Ca(HCO3)2
Ca(HCO3)2 -to-> CaCO3 + CO2 + H2O
CO2 + NaOH --> NaHCO3
2NaHCO3 -to-> Na2CO2 + CO2 + H2O
b) MgCO3 + H2SO4 --> MgSO4 + CO2 + H2O
MgSO4 + Na2CO3 --> MgCO3 + Na2SO4
MgCO3 + 2HCl --> MgCl2 + CO2 + H2O
a/ Ca + 1/2 O2 => CaO
CaO + H2O => Ca(OH)2
Ca(OH)2 + CO2 => CaCO3 + H2O
CaCO3 + CO2 + H2O => Ca(HCO3)2
Ca(HCO3)2 => CaCO3 + CO2 + H2O
CO2 + NaOH => NaHCO3
2NaHCO3 => Na2CO3 + CO2 + H2O
b/ MgCO3 + H2SO4 => MgSO4 + CO2 + H2O
MgSO4 + Na2CO3 => Na2SO4 + MgCO3
MgCO3 + 2HCl => MgCl2 + CO2 + H2O
a,
Phải là FeCl3--->Fe(OH)3
\(\text{FeCl3 + 3NaOH -> Fe(OH)3 + 3NaCl }\)
\(\text{2Fe(OH)3 - to--> Fe2O3 + 3H2O}\)
\(\text{Fe2O3 + 3H2SO4 -> Fe2(SO4)3 + 3H2O}\)
\(\text{Fe2(SO4)3 + 3BaCl2 -> 2FeCl3 + 3BaSO4}\)
\(\text{2FeCl3 + 3Ca(OH)2 -> 2Fe(OH)3 + 3CaCl2}\)
b,
\(\text{SO2 + 2NaOH -> Na2SO3 + H2O}\)
\(\text{Na2SO3 + H2SO4 -> Na2SO4 + SO2 + H2O}\)
\(\text{Na2SO4 + Ba(OH)2 -> BaSO4 + 2NaOH}\)
\(\text{2NaOH + ZnCl2 -> Zn(OH)2 + 2NaCl}\)
\(\text{Zn(OH)2 --to--> ZnO + H2O}\)
2NaOH+H2SO4--->Na2SO4+2H2O
CuO+2HCl--->CuCl2+H2O
3H2SO4+Al2O3--->Al2(SO4)3+3H2O
Ca(OH)2+2HNO3--->Ca(NO3)2+2H2O
CO2+Ca(OH)2--->CaCO3+H2O
a) NaOH + CuSO4 -> Na2SO4 + Cu(OH)2
b) CuO + 2HCl -> CuCl2 + 2H2O
c) 2Al + 6H2SO4 -> Al2(SO4)3 + 6H2O + 3SO2
d) CaCO3 + HNO3 -> Ca(NO3)2 + CO2 + H2O
f) CO2 + Ca(OH)2 -> CaCO3 + H2O
1,
| H2O | + | K2O | → | 2KOH |
2,
| Fe2O3 | + | 3H2SO4 | → | Fe2(SO4)3 | + | 3H2O |
3,
| 2HCl | + | Na2O | → | H2O | + | 2NaCl |
4, Phương trình này không xảy ra nha bạn
5,
| BaO | + | H2O | → | Ba(OH)2 |
6,
| 2HNO3 | + | ZnO | → | H2O | + | Zn(NO3)2 |
7,
| 2HCl | + | MgO | → | H2O | + | MgCl2 |
8,
| K2O | + | CO2 | → | K2CO3 |
9,
| Na2O | + | SO2 | → | Na2SO3 |
10,
| Al2O3 | + | 3H2SO4 | → | Al2(SO4)3 | + | 3H2O |
4Na + O2 --to--➢ 2Na2O
Na2O + H2O → 2NaOH
2NaOH + SO2 → Na2SO3 + H2O
Na2SO3 + 2HCl → 2NaCl + SO2 + H2O
SO2 + CaO → CaSO3