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vts122594
@vts122594
March 2022
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напишите уравнение реакций при которых осущ-ся следующие превращения. Si->Mg2Si->SiH4->SiO2->Na2SiO3->H2SiO3->SiO2
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Виктория0503
Verified answer
Si -> Mg2Si -> SiH4 -> SiO2 -> Na2SiO3 -> H2SiO3 -> SiO2
Si + 2Mg = Mg2Si
Mg2Si + 4HCl = SiH4 + 2MgCl2
SiH4 + 2O2 = SiO2 + 2H2O
SiO2 + 2NaOH = Na2SiO3 + H2O
Na2SiO3 + 2HCl = H2SiO3 + 2NaCl
H2SiO3 = SiO2 + H2O
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Verified answer
Si -> Mg2Si -> SiH4 -> SiO2 -> Na2SiO3 -> H2SiO3 -> SiO2Si + 2Mg = Mg2Si
Mg2Si + 4HCl = SiH4 + 2MgCl2
SiH4 + 2O2 = SiO2 + 2H2O
SiO2 + 2NaOH = Na2SiO3 + H2O
Na2SiO3 + 2HCl = H2SiO3 + 2NaCl
H2SiO3 = SiO2 + H2O