Write the reaction equation: SiCl4 → Si → Na2SiO3 → Na2CO3 → Na2SO4 → Na2SiO3

1) To obtain silicon from its chloride, it is necessary to add metallic zinc:

SiCl4 + 2Zn → 2ZnCl2 + Si;

2) Silicium reacts with sodium hydroxide and water to form – sodium silicate and hydrogen:

Si + 2NaOH + H2O → Na2SiO3 + H2;

3) When sodium silicate interacts with carbon dioxide and water, it turns out – sodium carbonate, silicon oxide (IV) and water:

Na2SiO3 + 2CO2 + 2H2O → 2Na2CO3 + SiO2 + 2H2O;

4) Sodium carbonate reacts with sulfuric acid, we get – sodium sulfate, water and carbon dioxide:

Na2CO3 + H2SO4 → Na2SO4 + H2O + CO2;

5) When sodium sulfate interacts with silicic acid, sodium silicate and sulfuric acid are formed:

H2SiO3 + Na2SO4 → Na2SiO3 + H2SO4.