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anna1831
@anna1831
August 2022
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осуществите цепочку превращений NaCl- HCl - H2 - HCl - CuCl2
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muronyukmarta1
Cl2+H2=2Hcl
2HCl+Cu=CuCl2+H2
CuCl2+2NaOH=Cu(OH)2+2NaCl
NaCl+AgNO3=NaNO3+AgCl
2. Ca+2H2O=Ca(OH)2+H2
Ca(OH)2+H2CO3=CaCO3+2H2O
CaCO3+H2CO3=Ca(HCO3)2
Ca(HCO3)2=CaCO3+CO2+H2O
CaCO3=CaO+CO2
3.O2+2Fe=2FeO
4FeO+O2=2Fe2O3
Fe2O3+6HCl=2FeCl3+3H2O
FeCl3+3NaOH=3NaCl+Fe(OH)3
4. 4Al+3O2=2Al2O3
Al2O3+6HNO3=2Al(NO3)3+3H2O
Al(NO3)3+3NaOH=3NaNO3+Al(OH)3
Al(OH)3+NaOH=NaAlO2+2H2O
5. S+O2=SO2
2SO2+O2=2SO3
SO3+H2O=H2SO4
H2SO4+NaOH=NaHSO4+H2O
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Answers & Comments
2HCl+Cu=CuCl2+H2
CuCl2+2NaOH=Cu(OH)2+2NaCl
NaCl+AgNO3=NaNO3+AgCl
2. Ca+2H2O=Ca(OH)2+H2
Ca(OH)2+H2CO3=CaCO3+2H2O
CaCO3+H2CO3=Ca(HCO3)2
Ca(HCO3)2=CaCO3+CO2+H2O
CaCO3=CaO+CO2
3.O2+2Fe=2FeO
4FeO+O2=2Fe2O3
Fe2O3+6HCl=2FeCl3+3H2O
FeCl3+3NaOH=3NaCl+Fe(OH)3
4. 4Al+3O2=2Al2O3
Al2O3+6HNO3=2Al(NO3)3+3H2O
Al(NO3)3+3NaOH=3NaNO3+Al(OH)3
Al(OH)3+NaOH=NaAlO2+2H2O
5. S+O2=SO2
2SO2+O2=2SO3
SO3+H2O=H2SO4
H2SO4+NaOH=NaHSO4+H2O