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![](https://rs.olm.vn/images/avt/0.png?1311)
\(a,C_2H_6O+3O_2\xrightarrow[]{t^o}2CO_2+3H_2O\\ CO_2+2NaOH\rightarrow Na_2CO_3+H_2O\\ Na_2CO_3+CO_2+H_2O\rightarrow2NaHCO_3\\ NaHCO_3+HCl\rightarrow NaCl+CO_2\uparrow+H_2O\)
\(b,C_2H_4+H_2O\xrightarrow[axit]{t^o}C_2H_5OH\\ C_2H_5OH+O_2\underrightarrow{\text{men giấm}}CH_3COOH+H_2O\\ CH_3COOH+C_2H_5OH\xrightarrow[t^o]{H_2SO_{4\left(đặc\right)}}CH_3COOC_2H_5+H_2O\\ 2CH_3COOH+BaO\rightarrow\left(CH_3COO\right)_2Ba+H_2O\\ \left(CH_3COO\right)_2Ba+Na_2SO_4\rightarrow2CH_3COONa+BaSO_4\downarrow\\ CH_3COONa+NaOH\rightarrow Na_2CO_3+CH_4\uparrow\)
![](https://rs.olm.vn/images/avt/0.png?1311)
(1) 2Ba+O2-->2BaO
(2)BaO+H2O-->Ba(OH)2
(3)2HCl+Ba(OH)2-->BaCl2+2H2O
(4)BaCl2+Na2CO3-->2NaCl+BaCO3
(5)BACO3 --> BAO + CO2
![](https://rs.olm.vn/images/avt/0.png?1311)
Bài 6:
a, \(NaCl+AgNO_3\rightarrow NaNO_3+AgCl_{\downarrow}\)
b, Không pư.
c, \(Fe+CuCl_2\rightarrow FeCl_2+Cu\)
d, \(BaCl_2+H_2SO_4\rightarrow2HCl+BaSO_{4\downarrow}\)
e, Không pư.
g, \(BaCO_3+2HCl\rightarrow BaCl_2+H_2O+CO_2\)
h, \(CaSO_3+H_2SO_4\rightarrow CaSO_{4\left(ittan\right)}+H_2O+SO_2\)
i, \(FeCl_2+Ba\left(OH\right)_2\underrightarrow{khongcokk}BaCl_2+Fe\left(OH\right)_{2\downarrow}\)
k, \(Na+H_2O\rightarrow NaOH+\dfrac{1}{2}H_2\)
\(2NaOH+FeCl_2\underrightarrow{khongcokk}2NaCl+Fe\left(OH\right)_{2\downarrow}\)
l, \(3Zn+2FeCl_3\rightarrow3ZnCl_2+2Fe\)
l, Không pư.
m, Không pư.
Bạn tham khảo nhé!
![](https://rs.olm.vn/images/avt/0.png?1311)
Viết các phương trình hóa học (ghi rõ điều kiện nếu có) theo sơ đồ sau:
CaCO3 to→ CaO + CO2
CaO + H2O → Ca(OH)2
Ca(OH)2 + CO2 → CaCO3 + H2O
CaCO3 + CO2 + H2O → Ca(HCO3)2
Ca(HCO3)2 + Na2CO3 → 2NaHCO3 + CaCO3
NaHCO3 + HCl → NaCl + CO2 + H2O
![](https://rs.olm.vn/images/avt/0.png?1311)
a.
(1) \(2SO_2+O_2\xrightarrow[V_2O_5]{t^o}2SO_3\)
(2) SO3 + H2O ---> H2SO4
(3) H2SO4 + CuO ---> CuSO4 + H2O
(4) CuSO4 + BaCl2 ---> BaSO4↓ + CuCl2
b.
(1) 2Ca + O2 ---to---> 2CaO
(2) CaO + H2O ---> Ca(OH)2
(3) Ca(OH)2 + CO2 ---> CaCO3↓ + H2O
(4) CaCO3 + CO2 + H2O ---> Ca(HCO3)2
c.
(1) 2Na + O2 ---to---> 2Na2O
(2) Na2O + H2O ---> 2NaOH
(3) 2NaOH + CO2 ---> Na2CO3 + H2O
(4) Na2CO3 + HCl ---> NaCl + CO2 + H2O
(5) \(2NaCl+2H_2O\xrightarrow[ĐP]{CMN}Cl_2+2H_2+2NaOH\)
(6) NaOH + CO2 ---> NaHCO3
d.
(1) Mg + H2SO4 ---> MgSO4 + H2
(2) MgSO4 + 2KOH ---> Mg(OH)2 + K2SO4
(3) \(Mg\left(OH\right)_2\overset{t^o}{--->}MgO+H_2O\)
(4) MgO + 2HCl ---> MgCl2 + H2O
(5) MgCl2 + H2CO3 ---> MgCO3 + 2HCl
![](https://rs.olm.vn/images/avt/0.png?1311)
CHẤT NÀO TRONG CÁC MUỐI ĐỀU TAN TRONG NƯỚC
1.CACO3,BACO3,K2CO3,MG(HCO3)2
2.BACO3,NAHCO3,MG(HCO3)2,NA2CO3
3.CACO3,BACO3,NAHCO3,MGCOS
4.NA2CO3,CA(HCO3)2,BA(HCO3)2,K2CO3
![](https://rs.olm.vn/images/avt/0.png?1311)
Câu 1:
\(C+O_2\xrightarrow{t^o}CO_2\\ CO_2+H_2O\buildrel{{}}\over\rightleftharpoons H_2CO_3\\ H_2CO_3+2NaOH\to Na_2CO_3+2H_2O\\ Na_2CO_3+H_2SO_4\to Na_2SO_4+H_2O+CO_2\uparrow\\ Na_2SO_4+BaCl_2\to 2NaCl+BaSO_4\downarrow\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(S+O_2\underrightarrow{t^o}SO_2\)
\(2SO_2+O_2\xrightarrow[V_2O_5]{t^o}2SO_3\)
\(SO_3+H_2O\rightarrow H_2SO_4\)
\(2NaOH+H_2SO_4\rightarrow Na_2SO_4+2H_2O\)
\(Na_2SO_4+2HCl\rightarrow2NaCl+H_2SO_4\)
Na2CO3 + 2HCl => 2NaCl + H2O + CO2↑
CO2 + H2O + Na2CO3 => 2NaHCO3
NaHCO3 + NaOH => Na2CO3 + H2O
Na2CO3 + Ba(OH)2 => 2NaOH + BaCO3↓
CO2 + H2O + BaCO3 => Ba(HCO3)2
Ba(HCO3)2 + Ba(OH)2 => H2O + 2BaCO3↓
Ba(HCO3)2 + 2HCl => BaCl2 + 2H2O + 2CO2↑
BaCl2 + K2SO3 => 2KCl + BaSO3↓
BaSO3 + H2SO4 => BaSO4↓ + H2O + SO2↑
SO2 + CaO => CaSO3
Na2CO3 + H2SO4 \(\rightarrow\) Na2SO4 + CO2 + H2O
CO2 + NaOH \(\rightarrow\) NaHCO3
2NaHCO3 \(\underrightarrow{t^o}\) Na2CO3 + CO2 + H2O
Na2CO3 + BaCl2 \(\rightarrow\) BaCO3 + 2NaCl
BaCO3 + CO2 + H2O \(\rightarrow\) Ba(HCO3)2
Ba(HCO3)2 + 2HCl \(\rightarrow\) BaCl2 + 2CO2 + 2H2O
BaCl2 + Na2SO3 \(\rightarrow\) BaSO3 + 2NaCl
BaSO3 \(\underrightarrow{t^o}\) BaO + SO2
SO2 + Ca(OH)2 \(\rightarrow\) BaSO3 + H2O