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\(a)C+O_2\xrightarrow[]{t^0}CO_2\\ CO_2+2NaOH\rightarrow Na_2CO_3+H_2O\\ Na_2CO_3+H_2SO_4\rightarrow Na_2SO_4+CO_2+H_2O\\ b)FeSO_4+BaCl_2\rightarrow FeCl_2+BaSO_4\\ FeCl_2+2NaOH\rightarrow Fe\left(OH\right)_2+2NaCl\\ Fe\left(OH\right)_2\xrightarrow[]{t^0}FeO+H_2\\ c)2Mg+O_2\xrightarrow[]{t^0}2MgO\\ MgO+H_2SO_4\rightarrow MgSO_4+H_2O\\ MgSO_4+BaCl_2\rightarrow MgCl_2+BaSO_4\)
a) Fe+Cl3\(\rightarrow\)FeCl3
FeCl3+3NaOH\(\rightarrow\) Fe(OH)3\(\downarrow\)+3NaCl
2Fe(OH)3\(\underrightarrow{t^o}\) Fe2O3+3H2O
Fe2O3+3H2\(\underrightarrow{t^o}\) 3Fe+3H2O
Fe+2HCl\(\rightarrow\) FeCl2+H2
b)2Mg+O2\(\underrightarrow{t^0}\) 2MgO
MgO+H2SO4\(\rightarrow\) MgSO4+H2O
MgSO4+Ba(NO3)2\(\rightarrow\) BaSO4\(\downarrow\) Mg(NO3)2
Mg(NO3)2+2NaOH\(\rightarrow\) Mg(OH)2\(\downarrow\) 2NaNO3
Mg(OH)2+2HCl\(\rightarrow\) MgCl2+2H2O
c) ý này giống ý b thôi bạn.
Chúc bạn học tốt!
1)\(Mg\left(OH\right)_2\underrightarrow{t^o}MgO+H_2O\)
2)\(MgO+H_2SO_4\rightarrow MgSO_4+H_2O\)
3)\(MgSO_4+BaCl_2\rightarrow MgCl_2+BaSO_4\downarrow\)
4)\(MgCl_2+2AgNO_3\rightarrow Mg\left(NO_3\right)_2+2AgCl\downarrow\)
5)\(MgSO_4+Ba\left(OH\right)_2\rightarrow BaSO_4\downarrow+Mg\left(OH\right)_2\downarrow\)
a.
2Al2O3 \(\underrightarrow{t^o}\)4Al + 3O2\(\uparrow\)
Al + 6HNO3 \(\rightarrow\) Al(NO3)3\(\downarrow\) + 3NO2 + 3H2O
Al(NO3)3 + NaOH \(\rightarrow\) Al(OH)3\(\downarrow\) + NaNO3
2Al(OH)3 \(\xrightarrow[criolit]{đpnc}\) Al2O3 + 3H2O
Al2O3 + 3H2SO4 \(\rightarrow\) Al2(SO4)3 + 3H2O
Al2(SO4)3 + 3BaCl2 \(\rightarrow\) 3BaSO4\(\downarrow\) + 2AlCl3
2AlCl3 \(\xrightarrow[criolit]{đpnc}\) 2Al + 3Cl2\(\uparrow\)
2Al + 3CuSO4 \(\rightarrow\) 3Cu + Al2(SO4)3
a)
$CaCO_3 \xrightarrow{t^o} CaO + CO_2$
$CaO + H_2O \to Ca(OH)_2$
$Ca(OH)_2 + 2HCl \to CaCl_2 + 2H_2O$
$CaCl_2 + 2AgNO_3 \to Ca(NO_3)_2 + 2AgCl$
b)
$2Mg + O_2 \xrightarrow{t^o} 2MgO$
$MgO + 2HCl \to MgCl_2 + H_2O$
$MgCl_2 + 2KOH \to Mg(OH)_2 + 2KCl$
$Mg(OH)_2 + H_2SO_4 \to MgSO_4 + 2H_2O$
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) \(ZnSO_4+BaCl_2\rightarrow ZnCl_2+BaSO_4\)
a)
\(\left(1\right)FeCl_2+Ba\left(OH\right)_2\rightarrow BaCl_2+Fe\left(OH\right)_2\downarrow\)
\(\left(2\right)Fe\left(OH\right)_2\underrightarrow{t^o}FeO+H_2O\)
\(\left(3\right)FeO+H_2SO_4\rightarrow FeSO_4+H_2O\)
\(\left(4\right)FeSO_4+2KOH\rightarrow K_2SO_4+Fe\left(OH\right)_2\downarrow\)
b)
\(\left(1\right)MgO+H_2SO_4\rightarrow MgSO_4+H_2O\)
\(\left(2\right)MgSO_4+BaCl_2\rightarrow MgCl_2+BaSO_4\downarrow\)
\(\left(3\right)MgCl_2+2AgNO_3\rightarrow Mg\left(NO_3\right)_2+2AgCl\downarrow\)
\(\left(4\right)Mg\left(NO_3\right)_2+2NaOH\rightarrow Mg\left(OH\right)_2\downarrow+2NaNO_3\)
a) FeCl2+2NaOH--->2NaCl+Fe(OH)2
Fe(OH)2--->FeO+H2O
FeO+H2SO4--->FeSO4+H2O
FeSO4+2NaOH-->Fe(OH)2+Na2SO4
b) MgO+ H2SO4--->MgSO4+H2O
MgSO4+ BaCl2---->MgCl2+BaSO4
MgCl2+ 2AgNO3---->Mg(NO3)2+ 2AgCl
Mg(NO3)2+ 2NaOH---> Mg(OH)2+2NaNO3