Предмет: Химия, автор: pro007

Составьте уравнения реакций по схеме:
Si- SiO2->Na2SiO3->H2SiO3->SiO2-Si
Превращения 3 рассмотрите в свете ТЭД

Ответы

Автор ответа: Alhimica
11
1)Si+O2=SiO2
2)SiO2+2NaOH=Na2SiO3+H2O
3)Na2SiO3+2HCl=H2SiO3+2NaCl
2Na(+)+SiO3(2-)+2H(+)+2Cl(-)=H2SiO3↓+2Na(+)+2Cl(-)
SiO3(2-)+2H(+)=H2SiO3↓
4) H2SiO3=SiO2+H2O
5) SiO2+2H2=Si+2H2O
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