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lifbobr
@lifbobr
July 2022
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Решите цепочки!))
1) CaH2⇒Ca(OH)2⇒CaCO3⇒CO2⇒CO⇒Cu
2) Cu⇒CuSO4⇒Cu(OH)2⇒CuCl2⇒Cu(NO3)2
3)Fe⇒FeSO4⇒Fe(OH)2⇒FeO⇒Fe⇒FeBr3
4)Na2CO3⇒CO2⇒C⇒Al4c3⇒Al2O3⇒NaAlO2⇒NaCl
5)ZnS⇒ZnO⇒ZnSO4⇒Zn(OH)2⇒Na2ZnO2⇒Na2SO4
6)PH3⇒P2O5⇒H3PO4⇒Na2PO4⇒Ag3PO4
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1) CaH2⇒Ca(OH)2⇒CaCO3⇒CO2⇒CO⇒Cu
CaH2 + H2O = Ca(OH)2 + H2
Ca(OH)2+ CO2 = CaCO3 + H2O
CaCO3= CaO + CO2
CO2 +C = 2CO
CuO +CO = Cu + CO2
2) Cu⇒CuSO4⇒Cu(OH)2⇒CuCl2⇒Cu(NO3)2
Cu +2H2SO4 = CuSO4 + SO2 + 2H2O
CuSO4+ 2NaOH = Cu(OH)2 + Na2SO4
Cu(OH)2+ 2HCl = CuCl2 + 2H2O
CuCl2+ AgNO3 = Cu(NO3)2 + 2AgCl
3)Fe⇒FeSO4⇒Fe(OH)2⇒FeO⇒Fe⇒FeBr3
Fe + H2SO4 = FeSO4 + H2
FeSO4 + 2NaOH = Fe(OH)2 + Na2SO4
Fe(OH)2 = FeO + H2O
FeO + H2 = Fe + H2O
2Fe + 3Br2 = 2FeBr3
4)Na2CO3⇒CO2⇒C⇒Al4c3⇒Al2O3⇒NaAlO2⇒NaCl
Na2CO3 + 2HCl = 2NaCl + CO2 + H2O
CO2 + 2Mg = 2MgO + C
3C + 4Al = Al4C3
Al2O3 + 2NaOH = 2NaAlO2 + H2O
NaAlO2 + 4HCl = NaCl + AlCl3 + 2H2O
5)ZnS⇒ZnO⇒ZnSO4⇒Zn(OH)2⇒Na2ZnO2⇒Na2SO4
2ZnS + 3O2 = 2ZnO + 2H2O
ZnO + H2SO4 = ZnSO4 + H2O
ZnSO4 + 2NaOH = Zn(OH)2 + Na2SO4
Zn(OH)2 + 2NaOH = Na2ZnO2 + 2H2O
Na2ZnO2 + 2H2SO4 = Na2SO4 + ZnSO4 + 2H2O
6)PH3⇒P2O5⇒H3PO4⇒Na2PO4⇒Ag3PO4
2PH3 + 4O2 = P2O5 + 3H2O
P2O5 + 3H2O = 2H3PO4
2H3PO4 + 3Na2O = 2Na3PO4 + 3H2O
Na3PO4 + 3AgNO3 = 3NaNO3 + Ag3PO4
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Answers & Comments
CaH2 + H2O = Ca(OH)2 + H2
Ca(OH)2+ CO2 = CaCO3 + H2O
CaCO3= CaO + CO2
CO2 +C = 2CO
CuO +CO = Cu + CO2
2) Cu⇒CuSO4⇒Cu(OH)2⇒CuCl2⇒Cu(NO3)2
Cu +2H2SO4 = CuSO4 + SO2 + 2H2O
CuSO4+ 2NaOH = Cu(OH)2 + Na2SO4
Cu(OH)2+ 2HCl = CuCl2 + 2H2O
CuCl2+ AgNO3 = Cu(NO3)2 + 2AgCl
3)Fe⇒FeSO4⇒Fe(OH)2⇒FeO⇒Fe⇒FeBr3
Fe + H2SO4 = FeSO4 + H2
FeSO4 + 2NaOH = Fe(OH)2 + Na2SO4
Fe(OH)2 = FeO + H2O
FeO + H2 = Fe + H2O
2Fe + 3Br2 = 2FeBr3
4)Na2CO3⇒CO2⇒C⇒Al4c3⇒Al2O3⇒NaAlO2⇒NaCl
Na2CO3 + 2HCl = 2NaCl + CO2 + H2O
CO2 + 2Mg = 2MgO + C
3C + 4Al = Al4C3
Al2O3 + 2NaOH = 2NaAlO2 + H2O
NaAlO2 + 4HCl = NaCl + AlCl3 + 2H2O
5)ZnS⇒ZnO⇒ZnSO4⇒Zn(OH)2⇒Na2ZnO2⇒Na2SO4
2ZnS + 3O2 = 2ZnO + 2H2O
ZnO + H2SO4 = ZnSO4 + H2O
ZnSO4 + 2NaOH = Zn(OH)2 + Na2SO4
Zn(OH)2 + 2NaOH = Na2ZnO2 + 2H2O
Na2ZnO2 + 2H2SO4 = Na2SO4 + ZnSO4 + 2H2O
6)PH3⇒P2O5⇒H3PO4⇒Na2PO4⇒Ag3PO4
2PH3 + 4O2 = P2O5 + 3H2O
P2O5 + 3H2O = 2H3PO4
2H3PO4 + 3Na2O = 2Na3PO4 + 3H2O
Na3PO4 + 3AgNO3 = 3NaNO3 + Ag3PO4