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A: Cu(OH)2 \(\underrightarrow{t^o}\) CuO + H2O
CuO + 2HCl → CuCl2 + H2O
CuCl2 +2 NaOH → Cu(OH)2 + NaCl
Cu(OH)2 + H2SO4 → CuSO4 + 2H2O
B: Mg(OH)2 \(\underrightarrow{t^o}\) 2MgO + H2O
MgO + 2HCl → MgCl2 + H2O
MgCl2 + 2NaOH → Mg(OH)2 + NaCl
Mg(OH)2 + H2SO4 → MgSO4 + 2H2O
a,
\(1.\text{2Mg + O2 → 2MgO}\)
\(2.\text{2HCl + MgO → H2O + MgCl2}\)
\(3.\text{2NaOH + MgCl2 → Mg(OH)2 + 2NaCl }\)
\(4.\text{H2SO4 + Mg(OH)2 → 2H2O + MgSO4}\)
b,
\(1.\text{4Al(bột)+3O2=2Al2O3}\)
\(2.\text{Al2O3 + 6HCl → 2AlCl3 + 3H2O}\)
\(3.\text{AlCl3 + 3NaOH → Al(OH)3 + 3NaCl}\)
\(4.\text{2Al(OH)3=Al2O3+3H2O}\)
a) 2Mg+O2--->2MgO
MgO+2HCl---->MgCl2+H2
MgCl2+2NaOH---->2NaCl+Mg(OH)2
Mg(OH)2+ CuSO4---->Cu(OH)2+MgSO4
b)4 Al+3O2--->2Al2O3
Al2O3+6HCl----->2AlCl3+3H2O
AlCl3+3NaOH---->Al(OH)3+3NaCl
2Al(OH)3---->Al2O3+3H2O
2Mg + O2 \(\underrightarrow{t^o}\)2MgO
MgO + H2SO4 -> MgSO4 + H2O
MgSO4 + BaCl2 -> BaSO4 + MgCl2
MgCl2 + 2NaOH -> 2NaCl + Mg(OH)2
a.
2Al +3 H2SO4=> Al2(SO4)3 + 3H2
Al2(SO4)3 + 6NaOH=> 3Na2SO4 + 2Al(OH)3
Al(OH)3 + 3HCl=> AlCl3 + 3H2O
b.
2fe + 3Cl2=>2 FeCl3
FeCl3 +3 NaOH=> 3NaCl + Fe(OH)3
2Fe(OH)3 => Fe2O3 + 3H2O
Fe2O3 + 6HCl=> 2FeCl3 + 3H2O
c.
CaCO3 => CaO + CO2
CaO + H2O=> Ca(OH)2
Ca(OH)2 + 2HCl=> CaCl2 + 2H2O
CaCl2 + 2AgNO3 => 2AgCl+ Ca(NO3)2
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)
\(2Ca+O_2\rightarrow2CaO\)
\(CaO+H_2O\rightarrow Ca\left(OH\right)_2\)
\(Ca\left(OH\right)_2+CO_2\rightarrow CaCO_3+H_2O\)
\(CaCO_3+2HCl\rightarrow CaCl_2+H_2O+CO_2\)
\(CaCl_2+2AgNO_3\rightarrow Ca\left(NO_3\right)_2+2AgCl\downarrow\)
b)
\(Fe_2O_3+6HCl\rightarrow2FeCl_3+3H_2O\)
\(FeCl_3+3KOH\rightarrow3KCl+Fe\left(OH\right)_3\downarrow\)
\(2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O\)
\(Fe_2O_3+3H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+3H_2O\)
)2Ca + O2 ------>2CaO
CaO + H2O --->Ca(OH)2
Ca(OH)2+CO2 -->CaCO3+H2OO
CaCO3+2HCl--->CaCl2+H2CO3
CaCl2+2HNO3--->Ca(NO3)2+2HCl
B,tự giải nha
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)
CaCO3 → CaO + CO2 (to)
CaO + H2O → Ca(OH)2
Ca(OH)2 + CO2 → CaCO3 + H2O
b)
CaO + 2HCl → CaCl2 + H2O
c)
Ca(OH)2 + 2AgNO3 → Ca(NO3)2 + Ag2O + H2O
- Mg + 2HCl ===> MgCl2 + H2
- MgCl2 + Ba(OH)2 ===> Mg(OH)2 + BaCl2
- Mg(OH)2 =(nhiệt)==> MgO + H2O
- MgO + H2SO4===> MgSO4 + H2O
- MgSO4 + BaCl2 ===> MgCl2 + BaSO4
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)
$2Mg + O_2 \xrightarrow{t^o} 2MgO$
$MgO + 2HCl \to MgCl_2 + H_2O$
$MgCl_2 + 2KOH \to Mg(OH)_2 + 2KCl$
$Mg(OH)_2 + H_2SO_4 \to MgSO_4 + 2H_2O$