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Zn+2HCl--->ZnCl2+H2
ZnCl2+Ag2SO4---->2AgCl+ZnSO4
ZnSO4+2NaOH--->Na2SO4+Zn(OH)2
Zn(OH)2---->ZnO+H2O
Câu 3 :
a)
(1) \(2Mg+O_2\xrightarrow[]{t^o}2MgO\)
(2) \(MgO+2HCl\rightarrow MgCl_2+H_2O\)
(3) \(MgCl_2+2NaOH\rightarrow Mg\left(OH\right)_2+2NaCl\)
(4) \(Mg\left(OH\right)_2+H_2SO_4\rightarrow MgSO_4+2H_2O\)
b)
(1) \(Zn\left(OH\right)_2\xrightarrow[]{t^o}ZnO+H_2O\)
(2) \(ZnO+H_2SO_4\rightarrow ZnSO_4+H_2O\)
(3) \(ZnSO_4+BaCl_2\rightarrow ZnCl_2+BaSO_4\)
\(\left(1\right)Zn+H_2SO_4\rightarrow ZnSO_4+H_2\\ \left(2\right)ZnSO_4+BaCl_2\rightarrow ZnCl_2+BaSO_4\\ \left(3\right)ZnCl_2+2NaOH\rightarrow Zn\left(OH\right)_2+2NaCl\\ \left(4\right)Zn\left(OH\right)_2\rightarrow^{t^o}ZnO+H_2O\)
\(2Zn+O_2\rightarrow2ZnO\)
\(ZnO+2HCl\rightarrow ZnCl_2+H_2O\)
\(ZnCl_2+2KOH\rightarrow Zn\left(OH\right)_2+2KCl\)
\(Zn\left(OH\right)_2+H_2SO_4\rightarrow ZnSO_4+2H_2O\)
2Zn +O2--->2ZnO
ZnO+2HCl--->ZnCL2+H2O
ZnCL2+2KOH--->Zn(OH)2+2KCl
Zn(OH)2+H2SO4--->ZnSO4+2H2O
1.
Zn + H2SO4 -> ZnSO4 + H2
ZnSO4 + BaCl2 -> ZnCl2 + BaSO4
ZnCl2 + 2AgNO3 -> Zn(NO3)2 + 2AgCl
Zn(NO3)2 + Ba(OH)2 -> Zn(OH)2 + Ba(NO3)2
Zn(OH)2 \(\underrightarrow{t^o}\)ZnO + H2O
2Fe(OH)3 \(\underrightarrow{t^o}\)Fe2O3 + 3H2O
Fe2O3 +6 HCl ->2 FeCl3 + 3H2O
FeCl3 + 3AgNO3 -> Fe(NO3)3 + 3AgCl
Fe(NO3)3 + 3NaOH -> 3NaNO3 + Fe(OH)3
2Fe(OH)3 + 3H2SO4 -> Fe2(SO4)3 + 6H2O
2SO2 +O2--->2SO3
SO3+H2SO4---->H2SO4+H2
H2SO4+Zn---->ZnSO4+H2
ZnSO4+2HCl----->ZnCl2 +H2SO4
ZnCl2 +2NaOH---.Zn(OH)2 +2NaCl
Zn(OH)2+2KOH--->K2ZnO2+2H2O
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