Проведите взаимодействие веществ по таким схемам:
а) Fe → FeCl2 → Fe(OH)2 → FeSO4
б) Al2(SO4)3 → Al(OH)3 → AlCl3 → Al(NO3)3
в) FeCl3 → Fe(OH)3 → Fe2O3 → Fe2(SO4)3
г) Ca(OH)2 → CaCO3 → Ca(HCO3)2 → CaCO3
Заранее огромное спасибо!
Ответы
Ответ дал:
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а) Fe → FeCl2 → Fe(OH)2 → FeSO4
Fe+2HCl = FeCl2 + H2
FeCl2 + 2KOH = Fe(OH)2 + 2KCl
Fe(OH)2 + H2SO4 = FeSO4 + 2H2O
б) Al2(SO4)3 → Al(OH)3 → AlCl3 → Al(NO3)3
Al2(SO4)3 + 6NaOH = 2Al(OH)3 + 3Na2SO4
Al(OH)3 + 3HCl = AlCl3 + 3H2O
AlCl3 + 3AgNO3 = Al(NO3)3 + 3AgCl
в) FeCl3 → Fe(OH)3 → Fe2O3 → Fe2(SO4)3
FeCl3 + 3NaOH = Fe(OH)3 + 3NaCl
2Fe(OH)3=t= Fe2O3 + 3H2O
Fe2O3 + 3H2SO4 = Fe2(SO4)3 + 3H2O
г) Ca(OH)2 → CaCO3 → Ca(HCO3)2 → CaCO3
Ca(OH)2 + CO2 = CaCO3 + H2O
CaCO3 + CO2 + H2O = Ca(HCO3)2
Ca(HCO3)2 =t= CaCO3 + CO2 + H2O
Fe+2HCl = FeCl2 + H2
FeCl2 + 2KOH = Fe(OH)2 + 2KCl
Fe(OH)2 + H2SO4 = FeSO4 + 2H2O
б) Al2(SO4)3 → Al(OH)3 → AlCl3 → Al(NO3)3
Al2(SO4)3 + 6NaOH = 2Al(OH)3 + 3Na2SO4
Al(OH)3 + 3HCl = AlCl3 + 3H2O
AlCl3 + 3AgNO3 = Al(NO3)3 + 3AgCl
в) FeCl3 → Fe(OH)3 → Fe2O3 → Fe2(SO4)3
FeCl3 + 3NaOH = Fe(OH)3 + 3NaCl
2Fe(OH)3=t= Fe2O3 + 3H2O
Fe2O3 + 3H2SO4 = Fe2(SO4)3 + 3H2O
г) Ca(OH)2 → CaCO3 → Ca(HCO3)2 → CaCO3
Ca(OH)2 + CO2 = CaCO3 + H2O
CaCO3 + CO2 + H2O = Ca(HCO3)2
Ca(HCO3)2 =t= CaCO3 + CO2 + H2O
Ответ дал:
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а) ![2Fe + O_{2}=2FeO 2Fe + O_{2}=2FeO](https://tex.z-dn.net/?f=2Fe+%2B+O_%7B2%7D%3D2FeO+)
![FeO + 2HCl = FeCl_{2}+H_{2}O FeO + 2HCl = FeCl_{2}+H_{2}O](https://tex.z-dn.net/?f=FeO+%2B+2HCl+%3D+FeCl_%7B2%7D%2BH_%7B2%7DO++)
![FeCl_{2}+Ca(OH)_{2} =Fe(OH)_{2}+CaCl_{2} FeCl_{2}+Ca(OH)_{2} =Fe(OH)_{2}+CaCl_{2}](https://tex.z-dn.net/?f=FeCl_%7B2%7D%2BCa%28OH%29_%7B2%7D+%3DFe%28OH%29_%7B2%7D%2BCaCl_%7B2%7D++)
![Fe(OH)_{2}+H_{2}SO_{4} = FeSO_{4} +2H_{2}O Fe(OH)_{2}+H_{2}SO_{4} = FeSO_{4} +2H_{2}O](https://tex.z-dn.net/?f=Fe%28OH%29_%7B2%7D%2BH_%7B2%7DSO_%7B4%7D+%3D+FeSO_%7B4%7D+%2B2H_%7B2%7DO+)
б)![2Al(OH)_{3} + 3H_{2}SO_{4} = Al_{2}(SO_{4})_{3} + 6H_{2}O 2Al(OH)_{3} + 3H_{2}SO_{4} = Al_{2}(SO_{4})_{3} + 6H_{2}O](https://tex.z-dn.net/?f=2Al%28OH%29_%7B3%7D+%2B+3H_%7B2%7DSO_%7B4%7D+%3D+Al_%7B2%7D%28SO_%7B4%7D%29_%7B3%7D+%2B+6H_%7B2%7DO+)
![Al_{2}(SO_{4})_{3} + 2Fe(OH)_{3} =2Al(OH)_{3} + Fe_{2}(SO_{4})_{3} Al_{2}(SO_{4})_{3} + 2Fe(OH)_{3} =2Al(OH)_{3} + Fe_{2}(SO_{4})_{3}](https://tex.z-dn.net/?f=Al_%7B2%7D%28SO_%7B4%7D%29_%7B3%7D+%2B+2Fe%28OH%29_%7B3%7D+%3D2Al%28OH%29_%7B3%7D+%2B+Fe_%7B2%7D%28SO_%7B4%7D%29_%7B3%7D+)
![Al(OH)_{3} + 3HCl=AlCl_{3} + 3H_{2}O Al(OH)_{3} + 3HCl=AlCl_{3} + 3H_{2}O](https://tex.z-dn.net/?f=Al%28OH%29_%7B3%7D+%2B+3HCl%3DAlCl_%7B3%7D+%2B+3H_%7B2%7DO+)
![AlCl_{3} + 3HNO_{3} = Al(NO_{3} )_{3} + 3HCl AlCl_{3} + 3HNO_{3} = Al(NO_{3} )_{3} + 3HCl](https://tex.z-dn.net/?f=AlCl_%7B3%7D+%2B+3HNO_%7B3%7D+%3D+Al%28NO_%7B3%7D+%29_%7B3%7D+%2B+3HCl)
б)
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