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a)
(1) 2Al + 6HCl --> 2AlCl3 + 3H2
(2) AlCl3 + 3NaOH --> Al(OH)3\(\downarrow\) + 3NaCl
(3) 2Al(OH)3 + 3H2SO4 --> Al2(SO4)3 + 6H2O
(4) Al2(SO4)3+ 3Ba(NO3)2 --> 2Al(NO3)3 + 3BaSO4\(\downarrow\)
b)
(1) 2Na + 2H2O --> 2NaOH + H2
(2) 2NaOH + H2SO4 --> Na2SO4 + 2H2O
(3) Na2SO4 + BaCl2 --> BaSO4\(\downarrow\) + 2NaCl
(4) NaCl + AgNO3 --> NaNO3 + AgCl\(\downarrow\)
c)
(1) 2Mg + O2 --to--> 2MgO
(2) MgO + 2HCl --> MgCl2 + H2O
(3) MgCl2 + 2NaOH --> Mg(OH)2\(\downarrow\) + 2NaCl
(4) Mg(OH)2 + H2SO4 --> MgSO4 + 2H2O
a)\(2Al+6HCl\rightarrow2AlCl_3+3H_2\)
\(2AlCl_3+3Ba\left(OH\right)_2\rightarrow2Al\left(OH\right)_3+3BaCl_2\)
\(2Al\left(OH\right)_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)
\(Al_2\left(SO_4\right)_3+3Ba\left(NO_3\right)_2\rightarrow2Al\left(NO_3\right)_3+3BaSO_4\)
b)\(2Na+2H_2O\rightarrow2NaOH+H_2\)
\(2NaOH+H_2SO_4\rightarrow Na_2SO_4+2H_2O\)
\(Na_2SO_4+BaCl_2\rightarrow2NaCl+BaSO_4\)
\(NaCl+HNO_3\rightarrow NaNO_3+HCl\)
Câu c em tự luyện tập nhé!!!
a/
- C + O2 ===> CO2
- CO2 + Ca(OH)2 ===> CaCO3 + H2O
- CaCO3 + Ba(OH)2 ===> Ca(OH)2 + BaCO3
- CO2 + Ca(OH)2 ===> CaCO3 + H2O
- CaCO3 + 2HCl ===> CaCl2 + CO2 + H2O
b/
- 4Al + 3O2 ===> 2Al2O3
- Al2O3 + 6HNO3 ===> 2Al(NO3)3 + 3H2O
- Al(NO3)3 + 3NaOH ===> Al(OH)3 + 3NaNO3
- 2Al(OH)3 + 6HCl ===> 2AlCl3 + 3H2O
- 2AlCl3 + 3Mg ===> 3MgCl2 + 2Al
a)c+o2->co2
co2+ca(oh)2->caco3 +h2o
caco3+ba(oh)2->CA(OH)2+baco3
co2+ca(oh)2->caco3 +h2o
caco3+bacl2->cacl2+baco3
\(2Al+6HCl\Rightarrow2AlCl_3+3H_2\\ Mg+2HNO_3\Rightarrow Mg\left(NO_3\right)_2+H_2\\ C_2H_6O+3O_2\underrightarrow{t^o}2CO_2+3H_2O\\ 4P+5O_2\Rightarrow2P_2O_5\)
2Al(OH)3 → Al2O3 + 3H2O
Fe3O4 + 2C → 3Fe + 2CO2
\(a,K+H_2O\to KOH+\dfrac{1}{2}H_2\\ b,BaCl_2+Na_2SO_4\to BaSO_4\downarrow+2NaCl\\ c,Mg(NO_3)_2+2NaOH\to Mg(OH)_2\downarrow+2NaNO_3\\ d,2Al(OH)_3\xrightarrow{t^o}Al_2O_3+3H_2O\)
16. Mg(NO3)2 + \(2NaOH\) → Mg(OH)2+\(2NaNO_3\)
17. MgCl2 + \(2NaOH\)→ Mg(OH)2+ \(2NaCl\)
18. Cu + \(2AgNO_3\) → Cu(NO3)2 + .\(2Ag\)
19. Cu + HCl → không pứ
20. 2AgNO3 + Cu → 2 Ag + \(Cu\left(NO_3\right)_2\)
21. Ba(NO3)2 + \(H_2SO_4\) → 2HNO3 + \(BaSO_4\)
22. Ag + O2 → ko pứ
23. MgSO4 + \(Ba\left(NO_3\right)_2\). → Mg(NO3)2 + \(BaSO_4\)
24. AgNO3 + \(HCl\). → HNO3 +\(AgCl\)
25. MgSO4 + Cu → ko pứ
26. NaOH + HNO3 → \(NaNO_3\) + \(H_2O\)
27. CuCl2 + 2 AgNO3 → \(Cu\left(NO_3\right)_2\) + \(2AgCl\)
28. CuCl2 + 2NaOH → \(Cu\left(OH\right)_2\) +2NaCl
29. CuCl2 + Zn → \(ZnCl_2\) + Cu
1) \(MgCl_2+2KOH\rightarrow Mg\left(OH\right)_2\downarrow+2KCl\)
2) \(Cu\left(OH\right)_2+2HCl\rightarrow CaCl_2+2H_2O\)
3) \(Cu\left(OH\right)_2+H_2SO_4\rightarrow CuSO_4+2H_2O\)
4) FeO + 2HCl --> FeCl2 + H2O
\(a,\left(1\right)Fe_2O_3+3H_2\rightarrow2Fe+3H_2O\left(1:3:2:3\right)\)
\(\left(2\right)Mg+2HCl\rightarrow MgCl_2+H_2\left(1:2:1:1\right)\\ \left(3\right)2FeCl_3+3Ca\left(OH\right)_2\rightarrow2Fe\left(OH\right)_3+3CaCl_2\left(2:3:2:3\right)\)
\(\left(4\right)K_2CO_3+2HCl\rightarrow2KCl+H_2O+CO_2\left(1:2:2:1:1\right)\)
\(b,PTHH:2Cu+O_2\underrightarrow{t^o}2CuO\\ Áp.dụng.ĐLBTKL,ta.có:\\ m_{Cu}+m_{O_2}=m_{CuO}\\ m_{O_2}=m_{CuO}-m_{Cu}=32-25,6=6,4\left(g\right)\)
\(Mg+2HCl\rightarrow MgCl_2+H_2\)
\(MgCl_2+2NaOH\rightarrow Mg\left(OH\right)_2+2NaCl\)
\(Mg\left(OH\right)_2\underrightarrow{t^o}MgO+H_2O\)
\(MgO+2HNO_3\rightarrow Mg\left(NO_3\right)_2+H_2O\)
Mg + 2HCl -> MgCl2 + H2
MgCl2 + 2H2O -> Mg(OH)2 + 2HCl
Mg(OH)2 -> MgO + H2O
MgO + 2HNO3 -> Mg(NO3)2 + H2)