Carry out the transformations: SiO2 – Na2SiO3- H2SiO3- Sio2 For one of the examples

univerkov | May 18, 2021 | education

Carry out the transformations: SiO2 – Na2SiO3- H2SiO3- Sio2 For one of the examples, write the ionic reaction equations

Sio2 + 2NaOH = Na2SiO3 + H2O (fusion of silicon dioxide with caustic soda, at high temperatures)
Na2SiO3 + H2SO4 = H2SiO3 ↓ + Na2SO4 (sodium metasilicate with sulfuric acid, form silicic acid and sodium sulfate)
H2SiO3 = siO2 + H2O (decomposition of silicic acid into silicon dioxide and water)

Ionic reaction equation:
Na2SiO3 + H2SO4 = H2SiO3 ↓ + Na2SO4
2H + + SO4 2- + Na 2+ + SiO3 2- = Na 2+ + So4 2- + H2SiO3 ↓
2H + + SiO3 2- = H2SiO3

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