từ các chất sau : fes2,02,h2o,na,cu. hãy viết các phương trình hóa học điều chế
a) h2s04,naoh
b)cus04,Fe2(so4)3
c) cu(oh)2, fe(oh)3
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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.
\(KClO_3\underrightarrow{nhiệt.phân}KCl+\dfrac{3}{2}O_2\)
\(O_2+2Cu\underrightarrow{t^o}2CuO\)
\(CuO+2HCl\rightarrow CuCl_2+H_2O\)
\(H_2O+Na\rightarrow NaOH+\dfrac{1}{2}H_2\)
b.
\(Cu\left(OH\right)_2\underrightarrow{t^o}CuO+H_2O\)
\(H_2O+Na\rightarrow NaOH+\dfrac{1}{2}H_2\)
\(H_2+FeO\underrightarrow{t^o}Fe+H_2O\)
\(Fe+H_2SO_4\rightarrow FeSO_4+H_2\)
- Na2SO3
\(2NaCl+2H_2O\underrightarrow{đpcmn}2NaOH+H_2+Cl_2\)
4FeS2 + 11O2 --to--> 2Fe2O3 + 8SO2
2NaOH + SO2 -->Na2SO3 + H2O
- Fe2(SO4)3:
2SO2 + O2 --to,V2O5--> 2SO3
SO3 + H2O --> H2SO4
Fe2O3 + 3H2SO4 --> Fe2(SO4)3 + 3H2O
- Fe(OH)3:
Fe2(SO4)3 + 6NaOH --> 3Na2SO4 + 2Fe(OH)3
- Ca(OH)2:
CaCO3 --to--> CaO + CO2
CaO + H2O --> Ca(OH)2
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
điều chế CuSO4
KMnO4--to--> K2MnO4+ MnO2+ O2
2Cu+ O2--to--> 2CuO
S+ O2---to--> SO2
2SO2+ O2--to---> 2SO3
SO3+ H2O----> H2SO4
CuO+ H2SO4------> CuSO4+ H2O
điều chế FeSO4
Fe+ H2SO4-----> FeSO4+ H2
\(Na+H_2O\rightarrow NaOH+\dfrac{1}{2}H_2\\ CuO+2HCl\rightarrow CuCl_2+H_2O\\ 2NaOH+CuCl_2\rightarrow Cu\left(OH\right)_2+2NaCl\\ Fe+2HCl\rightarrow FeCl_2+H_2O\\ FeCl_2+2NaOH\rightarrow Fe\left(OH\right)_2+2NaCl\\ H_2O-^{đpdd}\rightarrow H_2+\dfrac{1}{2}O_2\\ 4Fe\left(OH\right)_2+O_2-^{t^o}\rightarrow2Fe_2O_3+4H_2O\)
\(CuO+H_2O\rightarrow CU\left(OH\right)_2\\ Fe+2H_2O\rightarrow Fe\left(OH\right)_2\)