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a)
$2Na + 2H_2O \to 2NaOH + H_2$
$Na_2O + H_2O \to 2NaOH$
$Na_2CO_3 + Ca(OH)_2 \to CaCO_3 + 2NaOH$
$BaO + H_2O \to Ba(OH)_2$
$Ba(OH)_2 + Na_2CO_3 \to BaCO_3 + 2NaOH$
b)
$CuO + 2HCl \to CuCl_2 + H_2O$
$CuCl_2 + 2NaOH \to Cu(OH)_2 + 2NaCl$
$CuCl_2 + Ca(OH)_2 \to Cu(OH)_2 + CaCl_2$
$CuSO_4 + 2NaOH \to Cu(OH)_2 + Na_2SO_4$
$CuSO_4 + Ca(OH)_2 \to CaSO_4 + Cu(OH)_2$
$Cu(NO_3)_2 + 2NaOH \to Cu(OH)_2 + 2NaNO_3$
$Cu(NO_3)_2 + Ca(OH)_2 \to Ca(NO_3)_2 + Cu(OH)_2$
a)
2Na+2H2O→2NaOH+H22Na+2H2O→2NaOH+H2
Na2O+H2O→2NaOHNa2O+H2O→2NaOH
Na2CO3+Ca(OH)2→CaCO3+2NaOHNa2CO3+Ca(OH)2→CaCO3+2NaOH
BaO+H2O→Ba(OH)2BaO+H2O→Ba(OH)2
Ba(OH)2+Na2CO3→BaCO3+2NaOHBa(OH)2+Na2CO3→BaCO3+2NaOH
b)
CuO+2HCl→CuCl2+H2OCuO+2HCl→CuCl2+H2O
CuCl2+2NaOH→Cu(OH)2+2NaClCuCl2+2NaOH→Cu(OH)2+2NaCl
CuCl2+Ca(OH)2→Cu(OH)2+CaCl2CuCl2+Ca(OH)2→Cu(OH)2+CaCl2
CuSO4+2NaOH→Cu(OH)2+Na2SO4CuSO4+2NaOH→Cu(OH)2+Na2SO4
CuSO4+Ca(OH)2→CaSO4+Cu(OH)2CuSO4+Ca(OH)2→CaSO4+Cu(OH)2
Cu(NO3)2+2NaOH→Cu(OH)2+2NaNO3Cu(NO3)2+2NaOH→Cu(OH)2+2NaNO3
Cu(NO3)2+Ca(OH)2→Ca(NO3)2+Cu(OH)2
* Cu + H2SO4 -> CuSO4 + H2O +SO2
* NaCl + H2O -> NaOH + Cl2 + H2
2 Fe + 3Cl2 -> 2FeCl3
* 2FeCl3 -> Cl2 + 2FeCl2
2NaCl--------->2Na+Cl2
Fe+Cl2--->FeCl2
2FeCl2+Cl2---->2FeCl3
Cu+H2SO4đ------------>CuSO4+SO2+H2O
* Điều chế NaOH
Na2O + H2O ---> 2NaOH
* điều chế Cu(OH)2
CuO + H2SO4 ----> CuSO4 + H2O
CuSO4 + 2NaOH ----> Cu(OH)2\(\downarrow\) + Na2SO4
a) Na + H2O --------> NaOH + 1/2 H2
4FeS2 + 11O2 ---to----> 2Fe2O3 + 8SO2
2SO2 + O2 ----to, V2O5----> 2SO3
SO3 + H2O -------> H2SO4
b) 2Cu + O2 ----to----> 2CuO
4FeS2 + 11O2 ---to----> 2Fe2O3 + 8SO2
2SO2 + O2 ----to, V2O5----> 2SO3
SO3 + H2O -------> H2SO4
H2SO4 + CuO -----> CuSO4 + H2O
Fe2O3 + H2SO4---------> Fe2(SO4)3 + H2O
c) Na + H2O --------> NaOH + 1/2 H2
2Cu + O2 ----to----> 2CuO
4FeS2 + 11O2 ---to----> 2Fe2O3 + 8SO2
2SO2 + O2 ----to, V2O5----> 2SO3
SO3 + H2O -------> H2SO4
H2SO4 + CuO -----> CuSO4 + H2O
Fe2O3 + H2SO4---------> Fe2(SO4)3 + H2O
CuSO4 + 2NaOH -------> Cu(OH)2 + Na2SO4
Fe2(SO4)3 + 6NaOH --------->2 Fe(OH)3 + 3Na2SO4
a) \(2NaCl+2H_2O-dpcmn-->2NaOH+Cl_2+H_2\)
\(Cl_2+H_2-t^0->2HCl\)
\(Fe_2O_3+3H_2-t^0->2Fe+3H_2O\)
\(Fe+2HCl-->FeCl_2+H_2\uparrow\)
\(2FeCl_2+Cl_2-->2FeCl_3\)
\(FeCl_3+3NaOH-->Fe\left(OH\right)_3\downarrow+3NaCl\)
b) \(KK-ccpd-->O_2\uparrow\)
\(4FeS_2+11O_2-t^0->2Fe_2O_3+8SO_2\uparrow\)
\(2NaCl+2H_2O-dpcmn-->2NaOH+Cl_2\uparrow+H_2\uparrow\)
\(2SO_2+O_2-t^0,V2O5-->2SO_3\)
\(SO_3+H_2O-->H_2SO_4\)
\(Fe_2O_3+3H_2SO_4-->Fe_2\left(SO_4\right)_3+3H_2O\)
\(6NaOH+Fe_2\left(SO_4\right)_3-->2Fe\left(OH\right)_3+3Na_2SO_4\)
a) 5 chất khí: H2, O2, SO2, SO3, HCl
Ta có: 2H2O -đp->2H2 +O2
Cho FeS2 + O2 thu đc ở trên ta đc SO2:
4FeS2 + 11O2 -> 2Fe2O3 + 8SO2
Cho SO2 tác dụng vs O2 trong đk nhiệt độ, chất xúc tác V2O5:
2SO2 + O2 -t-> 2SO3
Đpnc NaCl ta thu đc khí Cl2: 2NaCl -đpnc-> 2Na + Cl2
Lấy khí Cl2 + H2 thu đc khi đp H2O ta đc khí HCl:
H2 + Cl2 -> 2HCl
\(2NaCl+2H_2O-^{đpcmn}\rightarrow2NaOH+H_2+Cl_2\)
\(2NaOH+CuSO_4\rightarrow Na_2SO_4+Cu\left(OH\right)_2\)
\(Cu\left(OH\right)_2-^{^{ }t^o}\rightarrow CuO+H_2O\)
a/
2NaCl\(\xrightarrow[]{đpnc}\) 2Na+ Cl2
2Na+ 2H2O\(\rightarrow\) 2NaOH+ H2\(\uparrow\)
2NaOH+ CuSO4\(\rightarrow\)Cu(OH)2\(\downarrow\)+ Na2SO4
b/
Cu(OH)2\(\xrightarrow[]{to}\) CuO+ H2O