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syuzi1999syuzi6
@syuzi1999syuzi6
July 2022
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осуществите превращения по цепочке Al2O3-> Al2(SO4)3 ->X ->Al2O3 , Fe->X->Fe(OH)2->FeSO4
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Verified answer
Al2O3-> Al2(SO4)3 ->X ->Al2O3
Al2O3 + 3H2SO4 =
Al2(SO4)3 + 3H2O
Al2(SO4)3 + 6KOH = 2Al(OH)3 + 3K2SO4
Al(OH)2 ----t---- > Al2O3
Fe->X->Fe(OH)2->FeSO4
Fe + 2HCl = FeCl2 + H2
FeCl2 + 2NaOH = Fe(OH)2 + 2NaCl
Fe(OH)2 + H2SO4 = FeSO4 + 2H2O
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Verified answer
Al2O3-> Al2(SO4)3 ->X ->Al2O3Al2O3 + 3H2SO4 = Al2(SO4)3 + 3H2O
Al2(SO4)3 + 6KOH = 2Al(OH)3 + 3K2SO4
Al(OH)2 ----t---- > Al2O3
Fe->X->Fe(OH)2->FeSO4
Fe + 2HCl = FeCl2 + H2
FeCl2 + 2NaOH = Fe(OH)2 + 2NaCl
Fe(OH)2 + H2SO4 = FeSO4 + 2H2O