Question

Представьте с помощью уровнений химических реакций следующие превращения sio2 mg2si sih4 sio2

Answer 1

Ответ:

Объяснение:

SiO₂ + 4Mg = Mg₂Si + 2MgO

Mg₂Si + 4H₂O = SiH₄ + 2Mg(OH)₂

SiH₄ + 2O₂ = SiO₂ + 2H₂O

Answer 2

Chemical Reactions for the Given Transformations

The chemical transformations provided can be represented through the following equations:

1. Transformation of SiO2 to Mg2Si: - The reaction involves the reduction of silicon dioxide (SiO2) by magnesium (Mg) to form magnesium silicide (Mg2Si) and silicon dioxide. - The balanced chemical equation for this reaction is: ``` 2Mg + SiO2 -> 2Mg2Si + 3O2 ```

2. Transformation of Mg2Si to SiH4: - The reaction involves the reaction of magnesium silicide (Mg2Si) with water to produce silane gas (SiH4) and magnesium hydroxide (Mg(OH)2). - The balanced chemical equation for this reaction is: ``` Mg2Si + 4H2O -> SiH4 + 2Mg(OH)2 ```

3. Transformation of SiH4 to SiO2: - The reaction involves the combustion of silane gas (SiH4) in the presence of oxygen to produce silicon dioxide (SiO2) and water (H2O). - The balanced chemical equation for this reaction is: ``` SiH4 + 2O2 -> SiO2 + 2H2O ```

These equations represent the chemical transformations of SiO2 to Mg2Si, Mg2Si to SiH4, and SiH4 to SiO2.