Write the reaction equation: SiO2 – Si – Mg2Si – SiH4 – SiO2 – Na2SiO3 – H2SiO3 – SiO2 – SiH4

SiO2 – Si – Mg2Si – SiH4 – SiO2 – Na2SiO3 – H2SiO3 – SiO2 – SiH4
1) SiO2 = Si + O2. There is no need to equalize.
2) Si + Mg2 = Mg2 Si. There is no need to equalize here either.
3) Mg2Si + H2SO4 = 2MgSO4 + SiH4. Here it was necessary to put 2 on the right side next to Magnesium.
4) SiH4 + 2O2 = SiO2 + 2H2O. Here you need to put 2 near the water in order to equalize the hydrogen and oxygen.
5) SIO2 + NA2O = NA2SIO3. There is no need to equalize.
6) NA2SIO3 + Н2СО3 = H2SiO3 + NA2СО3. There is no need to equalize.
7) H2SiO3 + О2 = SiO2 + 3Н2О. We put 3 near the water.
8) SiO2 + 2H2 = SiH4 + O2.